William Penn founded Philadelphia in 1682, a full 94 years before the United States achieved independence. Since then, the city has played a central role in the history, politics and culture of the nation. And while you probably know Philly for its cheesesteaks, sports fans, and as the signing place of the Declaration of Independence, there's still plenty to discover about this great city. Here are 10 more facts you didn't know about Philadelphia.
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