The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Legends surround this jagged rock formation in the New Mexico desert.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Cozy basement bar sports an inventory of over 2,000 beers.

Terrifying derelict military hospital once housed a recuperating Hitler.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

An eerie, derelict amusement park in Berlin.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

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

Striking occult iconography on a medieval German church.