Suspended above the ground in a thicket of towering Georgia trees is a modern architectural wonder.

Secret gardens just a few miles from downtown Atlanta.

One man's ambition created this psychedelic log home.

This abandoned amusement park was built on a site with a dark history.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Odd outsider art installations surround a Gold Rush-era ghost town.

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

This abandoned prison castle has become an imposing gallery of graffiti art.

A Beaux-Arts triumph set to become Ford's innovation campus

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.