No matter how old you are, museums are more fun when you can interact with the exhibits, and this is exactly the kind of experience offered by the Pennsylvania Trolley Museum. The collection contains approximately 50 historic trolley cars that were built between the 1870s and the 1950s, many of which can be seen in the Trolley Display Building, and visitors will even have the chance to take a scenic four-mile ride on one of the museum's restored streetcars.
A guided tour is include in the admission fee, and there's plenty of information about the history of trolleys in the Visitor's Center as well.