Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

Take a drunken tour inside the world's largest known geode.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

These disused steel furnaces are now haunting ruins that may one day be a national park.

A beautiful oddities shop crammed with strange and morbid curiosities.

This secluded walking trail is a hidden gem of a Pittsburgh park.

There aren't too many operational funiculars around, but Pittsburgh has two!