A 45-50 minute tour of the water cavern by boat Penn’s Cave, the only cave in Pennsylvania on the National Register of Historic Places, features glittering stalactites and stalagmites, often in mysteriously familiar shapes, such as “The Statue of Liberty” and “The Garden of the Gods.” See how dripping water has sculpted magnificent flowstone, curtains, cascades, and draperies against a background of pillars and gigantic columns. Group rate is: $14.50 --> need 20 people to sign up!! Not Group: $18.50