Philadelphia's Independence National Historic Park is the most historic square mile in the United States. This park holds some of the most historic and famous buildings that were the sites of events that were central to the founding of the United States. Included in the tour are stops to view the primary US symbols such as the Liberty Bell. The tour also explains the radical religious ideas behind the formation of Pennsylvania and the radical political thoughts that formed the United States. Stops also describe about how people lived during the early days of the US and how Philadelphia continued to be at an influence of the early nation.