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

Don't blink or you'll miss it.

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

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

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

Collection of vintage trailers double as hotel rooms.

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

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

What is the Thing?

Limestone caves with spectacular showcase chambers.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

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

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.

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

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.

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