Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

This little museum in the town where zombies were born celebrates the living dead.

A park full of outsider art, created by college students studying outsider art.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

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 beautiful oddities shop crammed with strange and morbid curiosities.

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.

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

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

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

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

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