Photo: Eric, City Hall (Some rights reserved)

Philadelphia is the largest city in Pennsylvania.

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From its role as the first capital of the United States to its oldest continuously operating institutions, Philadelphia is a city with a unique and fascinating history.

Historic Firsts

  • Oldest zoo in the United States. The Philadelphia Zoo opened in 1874.
  • Oldest continuously operating theater in the United States. The Walnut Street Theatre opened in 1809.
  • Oldest continuously operating restaurant in the United States. The City Tavern opened in 1773.
  • Oldest continuously operating university in the United States. The University of Pennsylvania was founded in 1740.
  • Oldest continuously operating library in the United States. The Library Company of Philadelphia opened in 1731.

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