America's most famous piece of self-built architecture.

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

An island filled with hundreds of hanging, decomposing, decapitated dolls.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

Remnants of a storybook amusement park hidden behind a strip mall.

An eerie, derelict amusement park in Berlin.

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

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Rippling sand dunes frozen in the Arizona rock.

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

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

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

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

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Abandoned Air Force base that has fallen into disrepair.

This giant steer-skull edifice refuses to die.

This abandoned horse racing track was an exercise in hubris from its inception.

Abandoned hotel with adjacent lake and golf course.

A strange house built only at night, with rumored mystic inspiration.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.