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Allentown, is the largest of the three Pennsylvania cities that make up the Lehigh Valley. Formerly an industrial hub, Allentown is probably most well known as the subject of the eponymous Billy Joel song. The long history of Allentown has left it with an impressive architectural heritage that includes buildings such as the neo-Roman Art Museum, which contains a reconstructed room designed by Frank Lloyd Wright. The city is also home to the Dorney Park and Wildwater Kingdom amusement park.