The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

An artificial crater field that trained astronauts for lunar exploration.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

The remains of this hell for leather wild west town can still be found in the Arizona desert.

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

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

The world's largest military aircraft cemetery.

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

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

This collection of neon icons is preserving Arizona's history, one sign at a time.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

Make a wish at what might be America's only Catholic shrine to a sinner.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Miniature art that tells an enormous story.

A natural history wunderkammer in the middle of the desert.

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

An amazing collection of model trains, collectibles, and artifacts that span the last 100 years.

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

Inside this store, a mysterious statue draws visitors from the world over.

A reproduction of earth's many biomes.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.