By Samantha Kuntz
Philadelphia has managed to accrue some significant historic resources over the past, oh, 300 years or so. It is home to no fewer than 550 resources (including districts) listed on National Register of Historic Places, and it holds over 11,087 resources (including districts) on the local Philadelphia Register of Historic Places. Philadelphia possesses relics of our nascent nation (the U.S. Constitution, the Liberty Bell), contains a UNESCO World Heritage Site (Independence Hall), and boasts an impressive new heritage association (full membership in the Organization of World Heritage Cities).
In other words, there must be something in the (Schuylkill and Delaware) water here.