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

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

An abandoned stretch of highway, deteriorating next to the operational one.

A beautiful oddities shop crammed with strange and morbid curiosities.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Mysterious rocks that ring musically when struck.

A toxic ghost town sitting atop a massive coal fire.

The oldest surviving botanic garden in the United States.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

A curious building honoring past and current members of a historic musical comedy troupe.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

The Ryerss mansion in Burholme Park now houses a community library and a museum filled with a trove of oddities from around the world.

Where America's first doomsday cult awaited the end of the world.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.