This artificial cave looks like something out of a fairytale.

This doorless 20th-century elevator doesn't stop or slow down.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The first museum in the world devoted to sexual gadgetry.

Walk through Czech history in Prague's largest graveyard.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

A church of bones, decorated with 40,000 human skeletons.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

The eccentric midcentury home of a suspected mafia gun-runner.

Rusted structures stand like ghosts of Cyprus' 6,000-year-old copper industry.

More than 20,000 salt and pepper shakers from across the globe call this museum home.

The animals wander freely amid this gorgeous stretch of nature.

A unique art center and shop just below a United Nations Checkpoint in central Nicosia.

Sex curse discovered on ancient tablet in Cyprus.

Ancient stone dildos and other odd pieces of medical history are displayed at this quirky Cyprus gem.

This no man's land slicing through the island is strewn with abandoned relics of another time.