A natural history wunderkammer in the middle of the desert.

This sanguine boulevard was named after a deadly cowboy bar fight.

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

A mysterious "wedding cake" castle in the middle of the urban desert.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

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

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A mysterious spirit totem at the edge of Navajo lands.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

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

An artificial crater field that trained astronauts for lunar exploration.

Don't blink or you'll miss it.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

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

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

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

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

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

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

Limestone caves with spectacular showcase chambers.

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

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