This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

These free-roaming horses were once destined to disappear from the land.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

A Tucson museum and performance space full of found-object movable sculptures.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This golf ball–shaped former desert real estate office now houses a UFO museum.

Don't blink or you'll miss it.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

Limestone caves with spectacular showcase chambers.

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

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 reproduction of earth's many biomes.

An homage to everyone's favorite prehistoric cartoon family.

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

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

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

This small oasis of flora and art was created in remembrance of a local auto business owner.

A museum dedicated to restoring vintage aircraft, located at a working airport.

Its dark depths conceal millions of rare, delicate crystal formations.

Gnomes have their very own bonsai-landscaped settlement on a university campus.

In California, colorful roadside signs remind us all that love transcends borders.

"You don't need a rocket scientist to build a steam engine, but we've got one." -Museum docent on the credentials of a restoration volunteer.