The Lehigh Valley region of eastern Pennsylvania is home to the three cities of Allentown, Bethlehem and Easton, as well as numerous townships and boroughs. Formerly an industrial hub, Allentown is probably most well known as the subject of the eponymous Billy Joel song. The third largest city in Pennsylvania, Allentown is vibrant with culture, celebrating its diversity.  The Puerto Rican community is very alive in Allentown and very proud of their heritage and visible everywhere.