A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

This whimsical home made entirely from clay is basically a giant piece of pottery.

A magical world of elves and fairies tucked amongst the trees in Colombia.

A little known Colombian theme park of giant curiosities.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

Colorful lights and mirror-like brine pools create trippy illusions within the historic mine.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

The rusted creatures wait to be discovered in Prague's botanical garden.

This automated sculpture of two men peeing will spell out text messages with their micturition.

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

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

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

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

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

In the middle of one of South America's most historic walled cities lies a bar with an enormous collection of Soviet memorabilia.