A Prada store in the West Texas desert that is never open for business.

"We Seceded Where Others Failed."

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

The world's largest military aircraft cemetery.

Inside this mountain lies several kilometers of breathtaking caves.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

The stoutest tree in the world.

Concrete strongholds stand guard over the Golden Gate.

Giant naked man on a hillside.

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

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

A house carved into a rock in the 1940s.

An urban laboratory.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Mexico's astounding mummy museum with "the world's smallest mummy."

Ghost town with a beer-drinking goat for mayor.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

A US military accident created the legends behind this Mexican version of the Bermuda Triangle.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

Death road of Bolivia.