Birthplace of the America, Philadelphia is the only World Heritage City in the United States and home to Independence Hall. Our tour of Old City gives you a unique view of Old City, the most historic part of Philadelphia. Explore Elfreth’s Alley, Betsy Ross’s Home and more! We made this tour in the context of the UPenn PACT Wayfinding Competition in 2015. All photos are part of the Library of Congress and in the public domain.