What else would you call a playground hidden in Alabama's oldest and largest cemetery?

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

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

One person’s lost luggage is another person’s treasure.

This massive cave is a sight to behold.

In Rickwood Caverns, visitors can travel hundreds of feet underground and see beautiful formations unique to the region.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

This giant temperature attraction created some giant electric bills.

A former utopian healing center created by a huckster and built by derelicts.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

The cluster of boulders near Fort Irwin is covered in military insignia.

Where NASA's satellites and rovers phone home.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

Once the largest town in eastern Yuba County now sits abandoned.

This historic tower in the California desert promises visitors a "vortex of good vibes".

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This giant steer-skull edifice refuses to die.

An assortment of armored tanks and Howitzer cannons in the middle of the Sonoran Desert.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

The biggest solar telescope in the world helps reveal the secrets of our sun.