Philadelphia, County seat in Pennsylvania, United States
Philadelphia extends across 142 square miles (367 square kilometers) with streets organized in a grid pattern between the Delaware and Schuylkill rivers in eastern Pennsylvania.
William Penn founded the settlement in 1682 to provide refuge for religious minorities. The Continental Congress met here and adopted the Declaration of Independence in 1776, establishing the city as a center for revolutionary activity.
The city houses 17 universities, multiple theaters, and the Philadelphia Museum of Art, which contains over 240,000 objects spanning two millennia of creative achievement.
The Southeastern Pennsylvania Transportation Authority operates trains, buses, and trolleys connecting neighborhoods and suburbs with downtown. Major airports include Philadelphia International Airport, located 11 miles (18 kilometers) southwest of the center, with rail connections available.
The city contains more than 4,000 exterior murals as part of the Mural Arts Program, constituting the largest collection of public art in North America and transforming neighborhoods through community engagement.
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