The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

This stone is a marker of one millionaire's personal vendetta against gravity.

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

A gallery of underwater art that can be visited by man and fish alike.

One of the largest, oldest, darkest, quietest motel rooms in the world.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

This amazingly preserved Gold Rush town is a historian's dream.

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

When German-Iraqi relations broke down, this embassy was vacated post haste.

Abandoned medieval hill town.

Mining town from the late 1890s, once home to Calamity Jane.

The remains of diamond fever taken over by the desert.

A psychological self-portrait in the form of a giant, segmented head.

Macabre astrological automaton clock dating to the late 1400s.

A mechanized clock where a man fights off a dragon, crab, and rooster.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

A popular swimming hole that hides one of America's most deadly diving spots.

An emerald-green grotto just a short trip from Austin.

A spectacular cave and a beguiling lake.

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

A massive underwater sinkhole made famous by Jacques Cousteau.

Amsterdam's Red Light District leaves little to the imagination.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

This floating cinema brings new meaning to the phrase "going out" to the movies.