A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

A 20-meter (65-foot) robot towers over Tokyo Bay.

Once a black market electronics marketplace, now an otaku shopper's paradise.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

Not quite the menace it once was, this monster still has some chops.

No need to strap in for a "ride" on this walkable roller coaster.

This former steel and coal plant is now a neon-lit industrial fantasia.

Colorful and chaotic stacked hotel in North Holland.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

A luxury hotel housed in a former 15th century Gothic church.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

As the highest point in the Mid-Atlantic range this stratovolcano offers spectacular views.

This abandoned five-star hotel is now a five-star urban exploration destination.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

Hiding the longest subterranean river known in the world.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.