Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Limestone caves with spectacular showcase chambers.

The world's largest military aircraft cemetery.

What is the Thing?

Miniature art that tells an enormous story.

The Magical World of George Phar Legler.

One of the largest, oldest, darkest, quietest motel rooms in the world.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

A self-built castle made by a mysterious man.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

An homage to everyone's favorite prehistoric cartoon family.

Albuquerque found the perfect use for tumbleweeds at Christmastime.

Outsider Art Community.

A Wild West jailhouse that slid down the mountainside.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

The span is crooked and made from two older recycled bridges.

Rippling sand dunes frozen in the Arizona rock.

America's most famous piece of self-built architecture.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.