This lost city belongs to one of the earliest civilizations in the world.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

This old mining town, deep in the California desert, has a year-round population of one.

Amelia Earhart's possible place of death.

The ruins of a lighthouse on the island Amelia Earhart never reached.

The ruins of this Alaska gold mine form a gorgeous ghost town.

This beautiful eden was once the vacation home of Tahitian royals before Marlon Brando bought it.

This imposing modern citadel started out as a home renovation project.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

This 16th-century monastery has been turned into a surrealist architecture compound.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This throwback amusement park is home to rides and unique storybook figures from the past.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

This historic stone gate tower is now just a lonely relic in the middle of a swamp.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

A daybeacon pyramid is about all that's left of this island that is said to have sunk due to a pirate's curse.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

Tour the sci-fi-esque reality of governmental disease management.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

This fantastical and eclectic English garden takes its inspiration from Egypt, China, the occult and more.