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

The fading, forgotten remains of a once bright and booming factory.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Collection of vintage trailers double as hotel rooms.

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.

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

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Ancient pueblos built into the base of a natural canyon wall.

A motel dedicated to Southwestern nostalgia.

A spiritual vortex among the red rocks in Sedona.

The Magical World of George Phar Legler.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

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

An homage to everyone's favorite prehistoric cartoon family.

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

Eons ago, a rushing lava river formed this pristine passage through solid rock.

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

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

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.

Dramatic river bend surrounds a natural red-rocked pedestal.