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116-693: Independence Hall is a historic civic building in Philadelphia , where both the Declaration of Independence and the Constitution of the United States were debated and adopted by the Founding Fathers of the United States . The structure, which is the centerpiece of Independence National Historical Park , was designated a World Heritage Site in 1979. The construction of Independence Hall, initially called

232-729: A 24-hour particle pollution rating of D in the American Lung Association 's 2017 State of the Air report, which analyzed data from 2013 to 2015. The city was ranked 22nd for ozone, 20th for short-term particle pollution, and 11th for year-round particle pollution. According to the same report, the city experienced a significant reduction in high ozone days since 2001—from nearly 50 days per year to fewer than 10—along with fewer days of high particle pollution since 2000—from about 19 days per year to about 3—and an approximate 30% reduction in annual levels of particle pollution since 2000. Five of

348-495: A bachelor's degree or higher. 23.9% spoke a language other than English at home, the most common of which was Spanish (10.8%). 15.0% of the populations foreign born, roughly half of whom are naturalized U.S. citizens. 3.7% of the population are veterans. The median household income was $ 52,889 and 22.8% of the population lived in poverty. 49.5% of the population drove alone to work, while 23.2% used public transit, 8.2% carpooled, 7.9% walked, and 7.0% worked from home. The average commute

464-403: A budget of $ 371 million. The Philadelphia Parking Authority is responsible for ensuring adequate parking for city residents, businesses, and visitors. Philadelphia's architectural history dates back to colonial times and includes a wide range of styles. The earliest structures were constructed with logs , but brick structures were common by 1700. During the 18th century, the cityscape

580-548: A central building with belltower and steeple, attached to two smaller wings via arcaded hyphens . The highest point to the tip of the steeple spire is 168 feet 7 + 1 ⁄ 4  inches (51.391 m) above the ground. The State House was built between 1732 and 1753, designed by Edmund Woolley and Andrew Hamilton , and built by Woolley. Its construction was commissioned by the Pennsylvania colonial legislature which paid for construction as funds were available, so it

696-467: A city on the Delaware River to serve as a port and place for government. Hoping that Philadelphia would become more like an English rural town instead of a city, Penn laid out roads on a grid plan to keep houses and businesses spread far apart with areas for gardens and orchards . The city's inhabitants did not follow Penn's plans, however, and instead crowded the present-day Port of Philadelphia on

812-451: A company for its construction. Hamilton and his future son-in-law William Allen , who was later chief justice of the Province of Pennsylvania , were named trustees and were authorized to purchase the land for the proposed state house. By October 1730, they had purchased lots on Chestnut Street for the building. By 1732, Hamilton acquired the deed for Lot no. 2 from surveyor David Powell, who

928-492: A grid pattern between the Delaware and Schuylkill rivers that is aligned with their courses. The original city plan was designed to allow for easy travel and to keep residences separated by open space that would help prevent the spread of fire. In keeping with the idea of a "Greene Countrie Towne", and inspired by the many types of trees that grew in the region, Penn named many of the east–west streets for local trees. Penn planned

1044-706: A growth in its population in 2007, which continued with incremental annual increases through the present. A migration pattern has been established from New York City to Philadelphia by residents opting for a large city with relative proximity and a lower cost of living . Philadelphia's geographic center is about 40° 0′ 34″ north latitude and 75° 8′ 0″ west longitude. The 40th parallel north passes through neighborhoods in Northeast Philadelphia , North Philadelphia , and West Philadelphia including Fairmount Park . The city encompasses 142.71 square miles (369.62 km ), of which 134.18 square miles (347.52 km )

1160-622: A joint effort between former mayors John F. Street and Michael Nutter . The zoning changes were intended to rectify incorrect zoning maps to facilitate future community development, as the city forecasts an additional 100,000 residents and 40,000 jobs will be added by 2035. The Philadelphia Housing Authority (PHA) is the largest landlord in Pennsylvania. Established in 1937, the PHA is the nation's fourth-largest housing authority, serving about 81,000 people with affordable housing, while employing 1,400 on

1276-601: A moderately sunny climate with an average of 2,498 hours of sunshine annually. The percentage of sunshine ranges from 47% in December to 61% in June, July, and August. The January daily average temperature is 33.7 °F (0.9 °C). The temperature frequently rises to 50 °F (10 °C) during thaws. July averages 78.7 °F (25.9 °C). Heat waves accompanied by high humidity and heat indices are frequent, with highs reaching or exceeding 90 °F (32 °C) on 30 days of

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1392-499: A national holiday for U.S. Independence Day . There are 56 signatures on the Declaration of Independence, including John Hancock who signed first, writing his name in very large letters. The prominence of this signature led to the term "John Hancock" or "Hancock" becoming a colloquial term in the United States for one's signature. The Congress continued to meet there until December 12, 1776, when Congress evacuated Philadelphia. During

1508-532: A new, more elaborate steeple designed by William Strickland , constructed in 1828. The north entrance was also rebuilt during this period. From 1802 to 1827, artist Charles Willson Peale housed his Philadelphia Museum of natural history specimens (including the skeleton of a mastodon ) and portraits of famous Americans, on the second floor of the Old State House and in the Assembly Room. In early 1816,

1624-429: A private viewing was arranged for honored guests of the mourners. The next day, (Sunday, April 23, 1865) lines began forming at 5:00 am. Over 300,000 mourners viewed the body – some waiting 5 hours just to see him. The Lincoln Special left Philadelphia's Kensington Station for New York City the next morning (Monday, April 24, 1865) at 4:00 am. The symbolic use of the hall was illustrated on June 17, 1915, where

1740-406: A tall clock ( grandfather clock ). The 40-foot-tall (12 m) limestone base was capped with a 14-foot (4.3 m) wooden case surrounding the clock's face, which was carved by cabinetmaker Samuel Harding . The clock was removed about 1830. The clock's dials were mounted at the east and west ends of the main building connected by rods to the clock movement in the middle of the building. A new clock

1856-794: A time, row houses built elsewhere in the United States were known as "Philadelphia rows". A variety of row houses are found throughout the city, from Federal-style continuous blocks in Old City and Society Hill to Victorian-style homes in North Philadelphia to twin row houses in West Philadelphia . While newer homes have been built recently, much of the housing dates to the 18th, 19th, and early 20th centuries, which has created problems such as urban decay and vacant lots. Some neighborhoods, including Northern Liberties and Society Hill, have been rehabilitated through gentrification . As of 2014 ,

1972-636: A town in Finland with a Swedish majority. In 1655, a Dutch military campaign led by New Netherland Director-General Peter Stuyvesant took control of the Swedish colony, ending its claim to independence. The Swedish and Finnish people settlers continued to have their own militia , religion, and court, and to enjoy substantial autonomy under the Dutch. An English fleet captured the New Netherland colony in 1664, though

2088-681: Is 31 minutes. Edmund Woolley Woolley was born in England around 1695, and emigrated to the Thirteen Colonies as a child, around 1705. It is not known with whom he apprenticed or where he learned his trade. He was one of the first members of The Carpenters' Company of the City and County of Philadelphia . He began construction of the Pennsylvania State House (better known today as Independence Hall ) in 1732. Traditionally, credit for

2204-589: Is closely related to the acquisition of the Liberty Bell . By mid-1753, the clock had been installed in the State House attic, but it was six years before Thomas Stretch received any pay for it. While the shell of the central portion of the building is original, the side wings, steeple and much of the interior were reconstructed much later. In 1781, the Pennsylvania Assembly had the wooden steeple removed from

2320-461: Is highly variable. Some winters have only light snow while others include major snowstorms. The normal seasonal snowfall averages 22.4 in (57 cm), with rare snowfalls in November or April, and rarely any sustained snow cover. Seasonal snowfall accumulation has ranged from trace amounts in 1972–73, to 78.7 inches (200 cm) in the winter of 2009–10. The city's heaviest single-storm snowfall

2436-487: Is home to five Fortune 500 corporate headquarters. Metropolitan Philadelphia ranks as one of the Big Five U.S. venture capital hubs, facilitated by its geographic proximity to both the entrepreneurial and financial ecosystems of New York City and to the federal regulatory environment of Washington, D.C. Greater Philadelphia is also a biotechnology hub. The Philadelphia Stock Exchange , owned by Nasdaq since 2008,

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2552-639: Is land and 8.53 square miles (22.09 km ), or 6%, is water. Natural bodies of water include the Delaware and Schuylkill rivers, lakes in Franklin Delano Roosevelt Park , and Cobbs , Wissahickon , and Pennypack creeks. The largest artificial body of water is East Park Reservoir in Fairmount Park . The lowest point is sea level and the highest point is in Chestnut Hill , about 446 feet (136 m) above sea level on Summit Street near

2668-495: Is often ranked as the nation's best city for professional sports fans. The city has a culturally and philanthropically active LGBTQ+ community . Philadelphia also has played an immensely influential historic and ongoing role in the development and evolution of American music, especially R&B , soul , and rock . As of 2022 , the Philadelphia metropolitan area had a gross metropolitan product of US$ 518.5 billion and

2784-578: Is one of the largest contiguous urban park areas in the U.S. The two parks, along with the Colonial Revival , Georgian and Federal -style mansions in them, have been listed as one entity on the National Register of Historic Places since 1972. Within the Köppen climate classification , Philadelphia falls under the northern periphery of the humid subtropical climate zone (Köppen Cfa ). Within

2900-553: Is present-day Market Street , and Hamilton favored Chestnut Street. Lawrence said nothing on the matter of its location. The disagreements escalated to the point where arbitration was needed. On August 8, 1733, Hamilton brought the matter before the Provincial Assembly . He explained that Kearsley did not approve of his plans for the state house's location and architecture and argued that the assembly had not agreed to these decisions. Three days later, Hamilton showed his plans for

3016-595: Is the most populous city in the U.S. state of Pennsylvania and the sixth-most populous city in the United States , with a population of 1,603,797 in the 2020 census . The city is the urban core of the larger Delaware Valley , also known as the Philadelphia metropolitan area, the nation's eighth-largest metropolitan area and seventh-largest combined statistical area with 6.245 million residents and 7.366 million residents, respectively. Philadelphia has played an extensive role in United States history . The city

3132-433: Is the nation's oldest stock exchange and a global leader in options trading. 30th Street Station , the city's primary rail station, is the third-busiest Amtrak hub in the nation, and the city's multimodal transportation and logistics infrastructure also includes Philadelphia International Airport , a major transatlantic gateway and transcontinental hub; the rapidly-growing PhilaPort seaport ; and Interstate 95 ,

3248-456: The 2020 U.S. Census , there were 1,603,797 people residing in Philadelphia, representing a 1.2% increase from the 2019 census estimate. The racial composition of the city was 39.3% Black alone (42.0% Black alone or in combination), 36.3% White alone (41.9% White alone or in combination), 8.7% Asian alone, 0.4% American Indian and Alaska Native alone, 8.7% some other race, and 6.9% multiracial. 14.9% of residents were Hispanic or Latino. 34.8% had

3364-742: The Annapolis Convention to discuss adjustments to the Articles of Confederation that would improve commerce. They invited state representatives to convene in Philadelphia to discuss improvements to the federal government. After debate, the Congress of the Confederation endorsed the plan to revise the Articles of Confederation on February 21, 1787. Twelve states, Rhode Island being the exception, accepted this invitation and sent delegates to convene in June 1787 at Independence Hall. The resolution calling

3480-693: The Articles of Confederation were approved in November 1777. The Second Continental Congress again returned to Independence Hall, for its final meetings, from July 2, 1778, to March 1, 1781. Under the Articles of Confederation , the Congress of the Confederation initially met in Independence Hall, from March 1, 1781, to June 21, 1783. However, as a result of the Pennsylvania Mutiny of 1783 , Congress again moved from Philadelphia in June 1783 to Princeton, New Jersey, and eventually to other cities. In September 1786, commissioners from five states met in

3596-705: The Battle of Brandywine in Chadds Ford Township , on September 11, 1777, during the Philadelphia campaign , the revolutionary capital of Philadelphia was defenseless and the city prepared for what was perceived to be an inevitable British attack. Because bells could easily be recast into munitions, the Liberty Bell , then known as the Pennsylvania State Bell, and bells from two Philadelphia churches, Christ Church and St. Peter's Church , were hastily taken down and transported by heavily guarded wagon train out of

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3712-558: The British Army , which was then the world's most powerful military force. Since the Declaration's July 4, 1776, adoption, its signing has been cited globally and repeatedly by various peoples of the world seeking independence and liberty. It also has been, since its adoption, the basis for annual celebration by Americans; in 1938, this celebration of the Declaration was formalized as Independence Day , one of only eleven designated U.S. federal holidays . After George Washington 's defeat at

3828-791: The British occupation of Philadelphia, the Continental Congress met in Baltimore , Maryland (December 20, 1776 to February 27, 1777). The Congress returned to Philadelphia from March 4, 1777, to September 18, 1777. In September 1777, the British Army again arrived to occupy Philadelphia, once again forcing the Continental Congress to abandon the State House. It then met in Lancaster, Pennsylvania, for one day (September 27, 1777) and in York, Pennsylvania, for nine months (September 30, 1777 to June 27, 1778), where

3944-609: The Commonwealth of Pennsylvania sold the State House to the City of Philadelphia , with a contract signed by the governor. The deed, however, was not transferred until more than two years later. Philadelphia has owned the State House and its associated buildings and grounds since that time. In 1898, the Mills wings were removed and replaced with replicas of the originals, but the Strickland steeple

4060-594: The Delaware River watershed , western Long Island , and the Lower Hudson Valley . Most Lenape were pushed out of the region during the 18th century by expanding European colonies, exacerbated by losses from intertribal conflicts. Lenape communities were weakened by newly introduced diseases, mainly smallpox , and conflict with Europeans. The Iroquois occasionally fought the Lenape. Surviving Lenape moved west into

4176-667: The Eastern Mediterranean during the Greek and Roman periods, including modern Alaşehir , mentioned as the site of an early Christian congregation in the Book of Revelation . As a Quaker , Penn had experienced religious persecution and wanted his colony to be a place where anyone could worship freely. This tolerance, which exceeded that of other colonies, led to better relations with the local native tribes and fostered Philadelphia's rapid growth into America's most important city. Penn planned

4292-633: The First Continental Congress ), the site of Benjamin Franklin 's home, the reconstructed Graff House (where Thomas Jefferson wrote the Declaration of Independence), City Tavern (center of Revolutionary War activities), restored period residences, and several early banks. The park also holds the Liberty Bell , Franklin's desk, the Syng inkstand , a portrait gallery , gardens, and libraries. A product of extensive documentary research and archaeology by

4408-566: The Great Migration from the South . By the 20th century, Philadelphia had an entrenched Republican political machine and a complacent population. In 1910, a general strike shut down the entire city. In 1917, following outrage over the election-year murder of a Philadelphia police officer, led to the shrinking of the City Council from two houses to just one. In July 1919, Philadelphia

4524-608: The League to Enforce Peace was formed here with former President William Howard Taft presiding. They proposed an international governing body under which participating nations would commit to "jointly...use...their economic and military forces against any one of their number making war against another" and "to formulate and codify rules of international law". The original steeple was demolished in 1781 due to structural problems. The wings and hyphens were demolished in 1812 and replaced by larger buildings designed by architect Robert Mills and

4640-537: The Liberty Bell , and hosting the Second Continental Congress during which the nation's 56 founders formed the Continental Army and elected George Washington as its commander in 1775, and unanimously adopted the Declaration of Independence on July 4, 1776. For nine months, from September 1777 to June 1778, the city fell under British occupation during the war's Philadelphia campaign . In 1787,

4756-555: The Pennsylvania State House , was completed in 1753. It served as the first capitol of both the colonial-era of the Province of Pennsylvania and, following American independence, the nation's first capital and the capital of Pennsylvania . Between 1775 and 1781, the Second Continental Congress , which appointed George Washington as commander-in-chief of the Continental Congress in 1775 and unanimously adopted

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4872-478: The Second Continental Congress , which adopted the Declaration of Independence in what was then called the Pennsylvania State House and was later renamed Independence Hall. Historian Joseph Ellis , in 2007, described the Declaration of Independence, written predominantly by Thomas Jefferson , as "the most potent and consequential words in American history," and its adoption represented a declaration of war against

4988-475: The Trewartha climate classification , Philadelphia has a temperate maritime climate ( Do ) limited to the north by the continental climate ( Dc ). Summers are typically hot and muggy. Fall and spring are generally mild, and winter is moderately cold. The plant life hardiness zones are 7a and 7b, reflecting an average annual extreme minimum temperature between 0 and 10 °F (−18 and −12 °C). Snowfall

5104-653: The U.S. Constitution was ratified in Philadelphia at the Philadelphia Convention . Philadelphia remained the nation's largest city until 1790, and it served as the nation's first capital from May 10, 1775, until December 12, 1776, and on four subsequent occasions until 1800, when construction of the new national capital in Washington, D.C. was completed. Philadelphia maintains extensive contemporary influence in business and industry , culture , sports , and music . With 17 four-year universities and colleges in

5220-640: The United States Post Office Department on July 26. The United States Declaration of Independence was approved there on July 4, 1776, and the Declaration was read aloud to the public in the area now known as Independence Square. This document unified the colonies in North America who declared themselves independent of the Kingdom of Great Britain and explained their justifications for doing so. These historic events are celebrated annually with

5336-448: The world's 54th-largest urban park . Philadelphia is known for its arts, culture , cuisine , and colonial and Revolutionary-era history; in 2016, it attracted 42 million domestic tourists who spent $ 6.8 billion, representing $ 11 billion in economic impact to the city and its surrounding Pennsylvania counties. With five professional sports teams and one of the nation's most loyal and passionate fan bases, Philadelphia

5452-428: The "Lincoln Special", left Harrisburg, Pennsylvania , on Saturday, April 22, 1865, at 11:15 am and arrived at Philadelphia at Broad Street Station that afternoon at 4:30 pm. It was carried by hearse past a crowd of 85,000 people and was held in state in the Assembly Room in the east wing of Independence Hall. While there, it was escorted and guarded by a detail of 27 naval and military officers. That evening,

5568-544: The 1850s. The much larger Centennial Bell, created for the United States Centennial Exposition in 1876, hangs in the cupola of the 1828 steeple. The Liberty Bell, with its distinctive crack, was displayed on the ground floor of the hall from the 1850s until 1976, and is now on display across the street in the Liberty Bell Center . From May 10, 1775, to 1783, the Pennsylvania State House served as

5684-526: The 1907 Jamestown Exposition , and the Pennsylvania Pavilion at the 1939 New York World's Fair . Dozens of structures replicating or loosely inspired by Independence Hall's iconic design have been built elsewhere in the United States, including a brick-by-brick replica across from Knott's Berry Farm in Buena Park, California. Philadelphia Philadelphia , colloquially referred to as Philly ,

5800-490: The 1980s. Historic areas such as Old City and Society Hill were renovated during the reformist mayoral era of the 1950s through the 1980s, making both areas among the most desirable Center City neighborhoods. Immigrants from around the world began to enter the U.S. through Philadelphia as their gateway, leading to a reversal of the city's population decline between 1950 and 2000, during which it lost about 25 percent of its residents. Philadelphia eventually began experiencing

5916-649: The 2 square miles (5.2 km ) of Center City to the roughly 134 square miles (350 km ) of Philadelphia County . In the latter half of the 19th century and leading into the 20th century, immigrants from Russia, Eastern Europe, and Italy, and African Americans from the southern U.S. settled in the city. Philadelphia was represented by the Washington Grays in the American Civil War . The African-American population of Philadelphia increased from 31,699 to 219,559 between 1880 and 1930, largely stemming from

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6032-641: The Convention specified its purpose as proposing amendments to the Articles, but the Convention decided to propose a rewritten Constitution . The Philadelphia Convention voted to keep deliberations secret, and to keep the Hall's windows shut throughout the hot summer. The result was the drafting of a new fundamental government design. On September 17, 1787, the Constitution was completed, and took effect on March 4, 1789, when

6148-434: The Declaration of Independence the following year, in 1776, met at Independence Hall. On June 21, 1788, it was the site of the Philadelphia Convention , where the U.S. Constitution, the longest-standing written and codified national constitution in the world, was drafted and ratified. In 1915, former-U.S. president William Howard Taft presided over a convention at Independence Hall, which including his formal announcement of

6264-450: The Delaware River and subdivided and resold their lots. Before Penn left Philadelphia for the final time, he issued the Charter of 1701 establishing it as a city. Though poor at first, Philadelphia became an important trading center with tolerable living conditions by the 1750s. Benjamin Franklin , a leading citizen, helped improve city services and founded new ones that were among the first in

6380-589: The Second Continental Congress adopted the Articles of Confederation on November 15, 1777, and the city later served as the meeting place for the Constitutional Convention , which ratified the Constitution in Independence Hall in Philadelphia on September 17, 1787. Philadelphia served as capital of the United States for much of the colonial and early post-colonial periods, including for a decade, from 1790 to 1800, while Washington, D.C. ,

6496-522: The United States after Midtown Manhattan in New York City. Philadelphia's neighborhoods are divided into six large sections that surround Center City: North Philadelphia , Northeast Philadelphia , South Philadelphia , Southwest Philadelphia , West Philadelphia , and Northwest Philadelphia . The city's geographic boundaries have been largely unchanged since these neighborhoods were consolidated in 1854. However, each of these large areas contains numerous neighborhoods, some of whose boundaries derive from

6612-531: The assassination of Abraham Lincoln 's, Lincoln's body and the disinterred coffin of his son Willie, who had predeceased him in 1862, were taken by train from Washington, D.C. , to Springfield, Illinois , for burial. It would essentially retrace the 1,654-mile (2,662 km) route Lincoln had traveled as president-elect in 1861 with deletion of Pittsburgh and Cincinnati and the addition of Chicago . The train left Washington, D.C. for Baltimore at 8:00 am on April 21, 1865. Lincoln's funeral train, known as

6728-421: The back of the U.S. $ 100 bill since 1928, and was depicted on the 1975-76 bicentennial Kennedy half dollar . The Assembly Room is pictured on the reverse of the U.S. two-dollar bill , from the original painting by John Trumbull entitled Declaration of Independence . Independence Hall served as the model for the Pennsylvania Building at the 1893 World's Columbian Exposition , the Pennsylvania Building at

6844-405: The boroughs, townships, and other communities that constituted Pennsylvania County before their inclusion within the city. The City Planning Commission , tasked with guiding growth and development of the city, has divided the city into 18 planning districts as part of the Philadelphia2035 physical development plan. Much of the city's 1980 zoning code was overhauled from 2007 to 2012 as part of

6960-438: The building's design has been given to Andrew Hamilton , but modern scholarship argues that he contributed little to the project. A surviving 1735 receipt lists a £5 payment to Woolley for "drawing drafts," "fronts" (elevations) and "Plans of the first and Second floors of the State House." The building took 16 years for Woolley and his workers, who included Ebenezer Tomlinson and Thomas Nevell, to complete. The interior woodwork

7076-468: The city for its outlying railroad commuting towns and newer housing. The resulting reduction in Philadelphia's tax base and the resources of local government caused the city to struggle through a long period of adjustment, and it approached bankruptcy by the late 1980s. In 1985, the MOVE Bombing of the Cobbs Creek neighborhood by city helicopters occurred, killing 11 and destroying 61 homes. Revitalization and gentrification of neighborhoods began in

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7192-402: The city's 17th century founding through the present, Philadelphia has been the birthplace or home to an extensive number of prominent and influential Americans . Prior to the arrival of Europeans in the early 17th century, the Philadelphia area was home to the Lenape Indians in the village of Shackamaxon . They were also called the Delaware Indians, and their historical territory was along

7308-456: The city's director of public safety, but political pressure still prevented long-term success in fighting crime and corruption. In 1940, non-Hispanic whites constituted 86.8% of the city's population. In 1950, the population peaked at more than two million residents, then began to decline with the restructuring of industry that led to the loss of many middle-class union jobs. In addition, suburbanization enticed many affluent residents to depart

7424-399: The city's tallest building. The Comcast Technology Center was completed in 2018, reaching a height of 1,121 ft (342 m), as the tallest building in the United States outside of Manhattan and Chicago. For much of Philadelphia's history, the typical home has been the row house . The row house was introduced to the United States via Philadelphia in the early 19th century and, for

7540-453: The city's total park space, including municipal, state, and federal parks in the city, amounts to 11,211 acres (17.5 sq mi). Philadelphia's largest park is Fairmount Park , which includes the Philadelphia Zoo and encompasses 2,052 acres (3.2 sq mi) of the total parkland. Fairmount Park's adjacent Wissahickon Valley Park contains 2,042 acres (3.2 sq mi). Fairmount Park, when combined with Wissahickon Valley Park,

7656-403: The city, Philadelphia is one of the nation's leading centers for higher education and academic research . The city is a national cultural center, hosting more outdoor sculptures and murals than any other city in the nation. Fairmount Park , when combined with adjacent Wissahickon Valley Park in the same watershed , is 2,052 acres (830 ha), representing one of the nation's largest and

7772-515: The city. The Liberty Bell was taken to Zion German Reformed Church in Northampton Town, which is present-day Allentown , where it was hidden under the church's floor boards for nine months from September 1777 until the British Army's departure from Philadelphia in June 1778. Two Revolutionary War battles, the Siege of Fort Mifflin , fought between September 26 and November 16, 1777, and the Battle of Germantown , fought on October 4, 1777, took place within Philadelphia's city limits. In Philadelphia,

7888-465: The colonies made it a natural center for America's revolutionaries . By the 1750s, Philadelphia surpassed Boston as the largest city and busiest port in British America , and the second-largest city in the entire British Empire after London . In 1774, as resentment of British colonial practices and support for independence was burgeoning in the colonies, Philadelphia hosted the First Continental Congress . From 1775 to 1781, Philadelphia hosted

8004-411: The colony. Penn made a treaty of friendship with Lenape chief Tammany under an elm tree at Shackamaxon , in what is now the city's Fishtown neighborhood. Penn named the city Philadelphia, which is Greek for "brotherly love", derived from the Ancient Greek terms φίλος phílos (beloved, dear) and ἀδελφός adelphós (brother, brotherly). There were a number of cities named Philadelphia in

8120-428: The combined site of the University of Virginia and Monticello ). Independence Hall and the Liberty Bell are now protected in a secure zone with entry at security screening buildings. Following the September 11, 2001 attacks , as part of a national effort to safeguard historical monuments by the United States Department of Homeland Security , pedestrian traffic around Independence Square and part of Independence Mall

8236-402: The country, and the first Black Episcopal Church . The free Black community also established many schools for its children with the help of Quakers . Large-scale construction projects for new roads, canals , and railroads made Philadelphia the first major industrial city in the United States. Throughout the 19th century, Philadelphia hosted a variety of industries and businesses; the largest

8352-486: The creation of five public parks in the city which were renamed in 1824. Centre Square was renamed Penn Square ; Northeast Square was renamed Franklin Square ; Southeast Square was renamed Washington Square ; Southwest Square was renamed Rittenhouse Square ; and Northwest Square was renamed Logan Circle/Square . Center City had an estimated 183,240 residents as of 2015 , making it the second-most populated downtown area in

8468-500: The era by the National Park Service, includes a musical tall case clock made by Peter Stretch , c. 1740, one of the most prominent clockmakers in early America and father of Thomas Stretch . Two smaller buildings adjoin the wings of Independence Hall: Old City Hall to the east, and Congress Hall to the west. These three buildings are together on a city block known as Independence Square, along with Philosophical Hall ,

8584-433: The events of the 1787 Constitutional Convention, was largely filmed in Independence Hall. Because of its symbolic history, Independence Hall has been used in more recent times as a venue for speeches and protests in support of democratic and civil rights movements. On October 26, 1918, Tomáš Masaryk proclaimed the independence of Czechoslovakia on the steps of Independence Hall. National Freedom Day , which commemorates

8700-532: The federal government, the restoration of Independence Hall and other buildings in the park set standards for other historic preservation and stimulated rejuvenation of old Philadelphia. The site, administered by the National Park Service , is listed as a World Heritage Site by UNESCO (joining only three other U.S. man-made monuments still in use, the others being the Statue of Liberty , Pueblo de Taos , and

8816-587: The fence in favor of movable bollards and chains, and also to remove at least some of the temporary barriers to pedestrians and visitors. On July 16, 1987, Congress met at Independence Hall in an unprecedented joint meeting outside of Washington, to commemorate the 200th anniversary of the Connecticut Compromise that determined the structure of Congress during the Constitutional Convention. The 1989 film A More Perfect Union , which portrays

8932-600: The first modern International Style skyscraper in the United States, the PSFS Building , designed by George Howe and William Lescaze . The 548 ft (167 m) City Hall remained the tallest building in the city until 1987 when One Liberty Place was completed. Numerous glass and granite skyscrapers were built in Center City beginning in the late 1980s. In 2007, the Comcast Center surpassed One Liberty Place to become

9048-474: The first official World's fair in the U.S. Immigrants, mostly from Ireland and Germany, settled in Philadelphia and the surrounding districts. These immigrants were largely responsible for the first general strike in North America in 1835, in which workers in the city won the ten-hour workday. The city was a destination for thousands of Irish immigrants fleeing the Great Famine in the 1840s; housing for them

9164-516: The formation of the League to Enforce Peace , which led to the League of Nations in 1920 and the United Nations in 1945. By the spring of 1729, there were proposals to build a state house in Philadelphia , and 2,000 pounds sterling were committed to the project. A committee including Thomas Lawrence , John Kearsley , and Andrew Hamilton was charged with selecting a site for the building's construction, acquiring plans for it, and contracting

9280-604: The intersection of Germantown Avenue and Bethlehem Pike at: 40.07815 N, 75.20747 W. Philadelphia is located on the Atlantic Seaboard Fall Line that separates the Atlantic Plain from the Piedmont . The Schuylkill River's rapids at East Falls were inundated by completion of the dam at Fairmount Water Works . The city is the seat of its own county . The city is bordered by six adjacent counties: Montgomery to

9396-551: The last occurrence of such a temperature being July 21, 2019. The lowest officially recorded temperature was −11 °F (−24 °C) on February 9, 1934. Temperatures at or below 0 °F (−18 °C) are rare, with the last such occurrence being January 19, 1994 . The record low maximum is 5 °F (−15 °C) on February 10, 1899, and December 30, 1880. The record high minimum is 83 °F (28 °C) on July 23, 2011, and July 24, 2010. See or edit raw graph data . Philadelphia County received an ozone grade of F and

9512-540: The late 1970s and continues into the 21st century with much of the development occurring in the Center City and University City neighborhoods. But this expanded a shortage of affordable housing in the city. After many manufacturers and businesses left Philadelphia or shut down, the city started attracting service businesses and began to market itself more aggressively as a tourist destination. Contemporary glass-and-granite skyscrapers were built in Center City beginning in

9628-498: The main building. The steeple had rotted and weakened to a dangerous extent by 1773, but it was not until 1781 that the Assembly had it removed and had the brick tower covered with a hipped roof. A more elaborate steeple, designed by William Strickland , was added in 1828. The original wings and hyphens (connecting corridors) were demolished and replaced in 1812. In 1898, these were in turn demolished and replaced with reconstructions of

9744-927: The nation, including a fire company , library , and hospital . A number of philosophical societies were formed, which were centers of the city's intellectual life, including the Philadelphia Society for Promoting Agriculture (1785), the Pennsylvania Society for the Encouragement of Manufactures and the Useful Arts (1787), the Academy of Natural Sciences (1812), and the Franklin Institute (1824). These societies developed and financed new industries that attracted skilled and knowledgeable immigrants from Europe. Philadelphia's importance and central location in

9860-678: The new Congress met for the first time in New York's Federal Hall . Article One, Section Eight, of the United States Constitution granted Congress the authority to create a federal district to serve as the national capital. Following the ratification of the Constitution, the Congress, while meeting in New York, passed the Residence Act of 1790, which established the District of Columbia as

9976-539: The new federal capital. However, a representative from Pennsylvania, Robert Morris , did manage to convince Congress to return to Philadelphia while the new permanent capital was being built. As a result, the Residence Act also declared Philadelphia to be the temporary capital for a period of ten years. The Congress moved back into Philadelphia on December 6, 1790, and met at Congress Hall , adjacent to Independence Hall, until moving to Washington, D.C., in 1800. Following

10092-449: The northwest; Bucks to the north and northeast; Burlington County, New Jersey to the east; Camden County, New Jersey to the southeast; Gloucester County, New Jersey to the south; and Delaware County to the southwest. Philadelphia was created in the 17th century, following the plan by William Penn 's surveyor Thomas Holme . Center City is structured with long, straight streets running nearly due east–west and north–south, forming

10208-553: The original home of the American Philosophical Society . Since its construction in the mid-20th century, to the north has been Independence Mall, which includes the current home of the Liberty Bell. The lowest chamber of the original wooden steeple was the first home of the Liberty Bell . When that steeple was removed in the 1780s the bell was lowered into the highest chamber of the brick tower, where it remained until

10324-491: The original wings. The building was renovated numerous times in the 19th and 20th century. The current interior is a mid-20th-century reconstruction by the National Park Service with the public rooms restored to their 18th-century appearance. During the summer of 1973, a replica of the Thomas Stretch clock was restored to Independence Hall. The second-floor Governor's Council Chamber, furnished with important examples of

10440-449: The principal meeting place of the Second Continental Congress , a body of representatives from each of the thirteen British North American colonies . On June 14, 1775, delegates of the Continental Congress nominated George Washington as commander-in-chief of the Continental Army in the Assembly Room of the Pennsylvania State House. The Congress appointed Benjamin Franklin to be the first Postmaster General of what would later become

10556-509: The recommendation of Benjamin Franklin , the building was purchased in 1749 for use by what became the Academy of Philadelphia (1751). Several years later, the academy was granted a Royal charter to establish a college, the College of Philadelphia (1755). The academy and college are predecessors of the University of Pennsylvania . The Whitefield Meeting House was demolished by 1845. Woolley

10672-745: The second half of the 19th century. His contemporaries included John McArthur Jr. , Addison Hutton , Wilson Eyre , the Wilson Brothers , and Horace Trumbauer . In 1871, construction began on the Second Empire -style Philadelphia City Hall . The Philadelphia Historical Commission was created in 1955 to preserve the cultural and architectural history of the city. The commission maintains the Philadelphia Register of Historic Places , adding historic buildings, structures, sites, objects and districts as it sees fit. In 1932, Philadelphia became home to

10788-538: The situation did not change substantially until 1682, when the area was included in William Penn 's charter for Pennsylvania. In 1681, in partial repayment of a debt, Charles II of England granted Penn a charter for what would become the Pennsylvania colony . Despite the royal charter, Penn bought the land from the local Lenape in an effort to establish good terms with the Native Americans and ensure peace for

10904-467: The spine of the north–south highway system along the U.S. East Coast . Philadelphia is a city of many firsts, including the nation's first library (1731), hospital (1751), medical school (1765), national capital (1774), university (by some accounts) (1779), central bank (1781), stock exchange (1790), zoo (1874), and business school (1881). Philadelphia contains 67 National Historic Landmarks , including Independence Hall . From

11020-451: The state house to the assembly, which accepted them. On August 14, the assembly sided with Hamilton, granting him full authority over the project, and the current site on the south side of Chestnut Street between Fifth and Sixth Streets was chosen as its location. Ground was broken for construction soon after. Independence Hall has a red brick facade, designed in Georgian style . It consists of

11136-496: The struggles of African Americans for equality and justice, has been celebrated at Independence Hall since 1942. On Independence Day, July 4, 1962, President John F. Kennedy gave an address there. Annual demonstrations organized by the East Coast Homophile Organizations advocating for gay rights were held in front of Independence Hall each July 4 from 1965 to 1969. Independence Hall has been pictured on

11252-493: The surrounding Delaware Valley in the early 17th century. The first settlements were founded by Dutch colonists , who built Fort Nassau on the Delaware River in 1623 in what is now Brooklawn, New Jersey . The Dutch considered the entire Delaware River valley to be part of their New Netherland colony. In 1638, Swedish settlers led by renegade Dutch established the colony of New Sweden at Fort Christina , located in present-day Wilmington, Delaware , and quickly spread out in

11368-522: The ten largest combined statistical areas (CSAs) were ranked higher for ozone: Los Angeles (1st), New York City (9th), Houston (12th), Dallas (13th), and San Jose, California (18th). Many smaller CSAs were also ranked higher for ozone, including Sacramento (8th), Las Vegas (10th), Denver (11th), El Paso (16th), and Salt Lake City (20th). Only two of those same ten CSAs, San Jose and Los Angeles, were ranked higher than Philadelphia for both year-round and short-term particle pollution. As of

11484-610: The tower in 1751, is now known as the Liberty Bell . Woolley designed and built the Whitefield Meeting House (1740, demolished), a Methodist church and charity school named for preacher George Whitefield . Its 70-by-100 foot (21 x 30.5 m), 2 + 1 ⁄ 2 -story building at 4th & Arch Streets was the largest building in the American Colonies – larger than the then-under-construction Pennsylvania State House. The charity school struggled financially. On

11600-606: The upper Ohio River basin. Following the American Revolutionary War and subsequent formation of an independent United States, the Lenape began moving further west. In the 1860s, the United States government sent most remaining Lenape in the eastern United States to the Indian Territory in present-day Oklahoma and surrounding territories as part of the Indian removal policy. Europeans first entered Philadelphia and

11716-567: The valley. In 1644, New Sweden supported the Susquehannocks in their war against Maryland colonists. In 1648, the Dutch built Fort Beversreede on the west bank of the Delaware, south of the Schuylkill River near the present-day Eastwick section of Philadelphia, to reassert their dominion over the area. The Swedes responded by building Fort Nya Korsholm , or New Korsholm , named after

11832-491: The year. The average window for freezing temperatures is November 6 to April 2, allowing a growing season of 217 days. Early fall and late winter are generally dry, with February having the lowest average precipitation at 2.75 inches (70 mm). The dewpoint in the summer averages between 59.1 and 64.5 °F (15 and 18 °C). The highest recorded temperature was 106 °F (41 °C) on August 7, 1918. Temperatures at or above 100 °F (38 °C) are not common, with

11948-536: Was 30.7 in (78 cm), which occurred in January 1996. Precipitation is generally spread throughout the year, with eight to eleven wet days per month, at an average annual rate of 44.1 inches (1,120 mm), but historically ranging from 29.31 in (744 mm) in 1922 to 64.33 in (1,634 mm) in 2011. The most rain recorded in one day occurred on July 28, 2013, when 8.02 in (204 mm) fell at Philadelphia International Airport . Philadelphia has

12064-466: Was being constructed and prepared to serve as the new national capital. In 1793, the largest yellow fever epidemic in U.S. history killed approximately 4,000 to 5,000 people in Philadelphia, or about ten percent of the city's population at the time. The capital of the United States was moved to Washington, D.C. in 1800 upon completion of the White House and U.S. Capitol buildings. The state capital

12180-448: Was carved by Samuel Harding and Bryan Wilkinson. The second floor featured meeting rooms and a banquet hall the width of the building. The original stairway proved inadequate for so large a building. In 1750, Woolley laid the foundations for a brick tower to house a grand staircase and support a wooden steeple. The tower's exterior was completed in 1753, but Hardings's interior woodwork was not completed until 1756. The bell ordered for

12296-503: Was designed and installed by Isaiah Lukens in 1828. The Lukens clock ran consecutively for eight days, "with four copper dials on each side that measured eight feet in diameter and clockworks that ensured sufficient power to strike the four-thousand pound bell made by John Wilbank." The Lukens clock remained in Independence Hall until 1877. The acquisition of the original clock and bell by the Pennsylvania Colonial Assembly

12412-506: Was developed south of South Street and later occupied by succeeding immigrants. They established a network of Catholic churches and schools and dominated the Catholic clergy for decades. Anti- Irish , anti-Catholic nativist riots erupted in Philadelphia in 1844. The rise in population of the surrounding districts helped lead to the Act of Consolidation of 1854 , which extended the city limits from

12528-477: Was dominated by Georgian architecture , including Independence Hall and Christ Church . In the first decades of the 19th century, Federal and Greek Revival architecture were the dominant styles produced by Philadelphia architects such as Benjamin Latrobe , William Strickland , John Haviland , John Notman , Thomas Walter , and Samuel Sloan . Frank Furness is considered Philadelphia's greatest architect of

12644-420: Was finished piecemeal. It was initially inhabited by the colonial government of Pennsylvania as its State House, from 1732 to 1799. In 1752, when Isaac Norris was selecting a man to build the first clock for the State House he chose Thomas Stretch , the son of Peter Stretch his old friend and fellow council member, to do the job. In 1753, Stretch erected a giant clock at the building's west end that resembled

12760-555: Was founded in 1682 by William Penn , an English Quaker and advocate of religious freedom , and served as the capital of the Pennsylvania Colony during the British colonial era . The city went on to play a historic and vital role during the American Revolution and Revolutionary War , serving as the central meeting place for the nation's founding fathers , hosting the First Continental Congress in 1774, preserving

12876-449: Was left in place. In 1948, the building's interior was restored to its original appearance. Independence National Historical Park was established by the 80th U.S. Congress later that year to preserve historical sites associated with the American Revolution . Independence National Historical Park comprises a landscaped area of four city blocks, as well as outlying sites that include Independence Square, Carpenters' Hall (meeting place of

12992-515: Was moved from Philadelphia to Lancaster in 1799, then ultimately to Harrisburg in 1812. Philadelphia remained the nation's largest city until the late 18th century. It also was the nation's financial and cultural center until ultimately being eclipsed in total population by New York City in 1790. In 1816, the city's free Black community founded the African Methodist Episcopal Church , the first independent Black denomination in

13108-406: Was one of more than 36 industrial cities nationally to suffer a race riot during Red Summer in post- World War I unrest as recent immigrants competed with Blacks for jobs. In the 1920s, the public flouting of Prohibition laws, organized crime , mob violence, and corrupt police involvement in illegal activities led to the appointment of Brig. Gen. Smedley Butler of the U.S. Marine Corps as

13224-411: Was paid for his work on the lot, but tensions began arising among the committee members. Kearsley and Hamilton disagreed on a number of issues concerning the state house. Kearsley, who designed Christ Church and St. Peter's Church in Philadelphia, had plans for the design, but so did Hamilton. The two men also disagreed on the building's site; Kearsley sought to have it constructed on High Street, which

13340-415: Was restricted by temporary bicycle barriers and park rangers. In 2006, the National Park Service proposed installing a seven-foot security fence around Independence Hall and bisecting Independence Square, a plan that met with opposition from Philadelphia city officials, Pennsylvania Governor Ed Rendell , and Senator Arlen Specter . As of January 2007, the National Park Service plan was revised to eliminate

13456-674: Was the textile industry . Major corporations in the 19th and early 20th centuries included the Baldwin Locomotive Works , William Cramp & Sons Shipbuilding Company , and the Pennsylvania Railroad . Established in 1870, the Philadelphia Conveyancers' Association was chartered by the state in 1871. Along with the U.S. Centennial in 1876, the city's industry was celebrated in the Centennial Exposition ,

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