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Franklin Court Underground Museum
314 Market St,
Philadelphia,
PA
Franklin Court Underground Museum is, as the name suggets, an underground museum located beneath Franklin Court. Franklin Court is dedicated to Benjamin Franklin, the great printer, diplomat, inventor, publisher, author, s... showcaves.com
3
Lost River Caverns
726 Durham St,
Hellertown,
PA
Lost River Caverns was named after the Lost River, a crystal clear underground waterway. However, since it was discovered in 1883 it also had the names Rentzeimer's Cave and Lost Cave. The cave offered underground weddings... showcaves.com
4
Philadelphia Grotto
13 Levis Ave,
Media,
PA
1st Thur 7:30 p.m. exc Dec and holidays, Conshohocken PA. See web site (Phillygrotto.org)for location and details. nssio.org