This award-winning men's bathroom was just too beautiful to not allow women to see.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

More gold than anywhere else, ever.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

One of only two commuter aerial tramways in the United States.

Elevated freight railway turned wildly successful urban park.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

Two Civil War-era cemeteries stuck between runways at the world's busiest airport.

The only subterranean ping pong table in Atlanta.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

An abandoned town is hidden in Great Smoky Mountains National Park.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

An abandoned 1920s school with a mysterious history.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

An annual celebration of the region's successful elk reintroduction program.