A series of labyrinths in the Nevada desert inspire meditation and calmness.

A museum dedicated to the history and art of staying clean.

Back in the day everyone who was anyone played this historic western theater.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

A museum dedicated to Nantucket's legacy as the "graveyard of the Atlantic."

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Walk the same tracks that once ferried Gilded Age aristocrats to their vacation destinations.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This Old West prison built into the side of a cliff was said to be inescapable.

This landmark is a central figure in the Nez Perce origin story.

An Idaho legend carved out a cave village with his own two hands.

Part of a secret 1970s nuclear defense program is now open to the public.

The lowest point in South Dakota and the source of the Minnesota River.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

A Nevada mining boomtown that ran out of silver and luck.

An eatery for UFO seekers on the Extraterrestrial Highway.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

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