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

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Elevated freight railway turned wildly successful urban park.

The fairy tale castle of the "fairy-tale king."

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

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

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

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The legendary building that needed ghostly approval before being built.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

France's most famous cemetery, with some of its most curious tombs.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

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