A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

An off-grid art installation that encourages its visitors to imagine a world without waste.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

18m long sarcophagus of a constantly growing dead prophet.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Light still pours into the ruins of this ancient Islamic observatory.

You can swim in these highly salty, mesmerizingly blue lakes in the Atacama Desert.

The largest geyser field in the southern hemisphere is a spectacular sight.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

An enchanting rocky island of scraggly baobabs surrounded by an ancient sea and sprawling salt pans.

A museum dedicated to the alleged Roswell Incident.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

This is one really big nut.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

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

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

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

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."