Hot springs monkey spa in the middle of Hell's Valley.

A snapshot of the city's fascinating voodoo culture.

These fantastically named natural pools look like something out of a Scottish myth.

This massive library holds what was once the largest book collection in the world.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Most-visited and most-photographed slot canyon in the American Southwest.

Medicinal spa created with the discharge from a geothermal energy plant.

A beautiful 62-acre Catholic shrine and botanical garden.

Dramatic river bend surrounds a natural red-rocked pedestal.

World's largest collection of serial killer artwork and other macabre exhibits.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Resting place of Hollywood's immortals is also site of summer film screenings.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

An eerie, derelict amusement park in Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.