Once the path of a railway tunnel, now home to thousands of glowing insects.

Version of the French Riviera destroyed by the sea.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Elaborate series of tunnels where traces of mass suicide are still visible.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A toxic ghost town sitting atop a massive coal fire.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

When you get to Magnetic Hill park near the sign, put your vehicle in neutral gear, and watch it roll uphill...