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

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.

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

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

An artificial crater field that trained astronauts for lunar exploration.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

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

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

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

Collection of vintage trailers double as hotel rooms.

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

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

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

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

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

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

A spiritual vortex among the red rocks in Sedona.

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

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

Limestone caves with spectacular showcase chambers.

What is the Thing?

A motel dedicated to Southwestern nostalgia.

The world's largest military aircraft cemetery.