An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

A wacky, UFO-shaped house in a suburban neighborhood.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

A sculpture for the sun and stars, created by Nancy Holt.

This century-old roadside attraction is full of bizarre rock formations.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

This folk art compound was built by a fortune teller on the advice of three people from the future.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.