This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

This abandoned horse racing track was an exercise in hubris from its inception.

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

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Collection of vintage trailers double as hotel rooms.

Miniature art that tells an enormous story.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The Magical World of George Phar Legler.

A Saint Nicholas-themed ghost town in the Mojave desert.

America's only nuclear missile silo open to the public.

Outsider Art Community.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

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

Rippling sand dunes frozen in the Arizona rock.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

Once a year, at exactly 11:11 a.m., this monument comes to life.

A self-built castle made by a mysterious man.