The secret city built by the Manhattan Project.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

A multi-storied adobe complex has been inhabited for more than a thousand years.

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

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

"I did this all while you were watching TV."

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A monument to the art of slicing people open.

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

Experience a charming 1930's version of "infotainment."

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A museum devoted entirely to the rattlesnakes and snake-related art.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A sprawling collection of over 106,000 toys from around the world.

A unique geological area spiked with wind-carved rocks that resemble teepees.

This popular pilgrimage site offers a hole filled with holy healing dirt.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.