A real flying saucer, contracted by the U.S. Air Force.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

The oldest brick house in the state of Ohio.

Hidden on two floors of downtown building, the library has an incredible deal on rent.

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

When humans abandoned this safari lodge, the lions took over.

Plenty of old carney magic still haunts this photogenic amusement park.

Nature is leading a successful mutiny on this century-old freighter.

An abandoned water park overtaken by the dunes.

A desert settlement founded and later abandoned by Hawaiian members of the Church of Jesus Christ of Latter-day Saints in Utah's Skull Valley.

Surreal riveted sea forts once protected the Kent shores from German attack.

An abandoned saucer-shaped monument in the Bulgarian mountains.

An Italian hillside ghost town.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

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

A haunting theme park is slowly being swallowed by the jungle.

A series of five defunct panopticon prisons in Cuba.

A deserted hodgepodge of experimental structures designed by nearby university students.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

An abandoned outdoor movie theater in the Sinai desert.

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

It took an artist 20 years to create this sprawling sculpture garden honoring the area's ancient inhabitants.