Show cave · Richmond Township, Berks County
Crystal Cave

Quarrymen broke into this cave in 1871, and visitors have toured it since the following year, making it one of the oldest show caves in the country; guided walks wind past glittering calcite formations.
Make a day of it
Nearby
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Hawk Mountain Sanctuary
The world's first refuge for birds of prey, where hikers climb to rocky lookouts on the Kittatinny Ridge to watch thousands of hawks, eagles and falcons stream south each fall.
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Mid-Atlantic Air Museum
Volunteers restore and display vintage military and civilian aircraft at this airport museum, whose hangars hold rarities such as a World War II P-61 Black Widow night fighter.
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Lehigh Valley Zoo
Set within the 1,100-acre Trexler Nature Preserve, this zoo has African penguins, red pandas, kangaroos and giraffes, while herds of bison and elk roam the surrounding preserve.
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Reading Public Museum
Art, natural science and ancient civilizations under one roof, plus a planetarium and an arboretum with paths winding around the museum's landscaped grounds.

