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

This might just be the TARDIS of bookstores.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

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

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

The Home and murder site of the witch of Rehmeyers Hollow.

In which a local geological marvel becomes a quaint roadside attraction.

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

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

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

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

In the early 1800s, surgery was also a show.

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

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

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

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

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Mysterious rocks that ring musically when struck.

A toxic ghost town sitting atop a massive coal fire.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.