This sign designates the road that leads to the infamous Area 51.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

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

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

There's nothing creepier than a cemetery next to a clown motel.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

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

Nevada's largest cactus collection stands outside a candy mogul's small factory.

This curiosity shop contains a museum filled with bizarre, unique objects.

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

This botanical garden has been nicknamed "Alabama's Little Corner of Greece."

The second-tallest water tower shaped like a peach in the American South.

This 19th-century hotel and spa hosted famous guests like like the Vanderbilt family, William Waldorf Astor, Helen Keller, and Jay Gould.

This 36-foot-tall bronze Lady Liberty holds a real flaming torch.

Large rocks have been painted to whimsically resemble wild and farm animals.

In 1863, a woman buried her hard-drinking husband beneath his beloved booze.

Abstract marble carving for an 8.5-pound rock.

This fountain was commissioned by a mother grieving over her son's passing.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.

An autonomous oak in Alabama.

These ruins are all that's left of the former Alabama State Capitol.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'