Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

Small rustic cabin nested in the mountains of Killington, VT.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

This is one really big nut.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

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

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

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

These aggressively sustainable art homes look like something out of 1970's science fiction.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A clear blue swimming hole with hidden caves, still unexplored.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Where America's first doomsday cult awaited the end of the world.

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

World's first "penitentiary," meant to be humane, drove men insane.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.