Crystal Cave Famous Crystal Cave Park is absolutely amazing. This natural underground attraction near Kutztown has been visited by millions since it was first discovered in 1871. Exploring caves is both fun and educational, so it's perfect for the family. Underground tours and other attractions. Daily March 1st from November 30th. Call for a free brochure. An ice cream parlor and an affordable, one-of-a-kind miniature golf course is also on location.