Legend says train robbers stashed their gold within the depths of this unusual cave.

A reproduction of earth's many biomes.

An off-the-beaten path cave with an underground lake.

During World War II this was the site of an "honor camp" used as a prison for draft dodgers, Native American conscientious objectors, and Japanese-Americans—including a man who brought his case against the camp to the Supreme Court.

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

Visitors to this public park will also find the ruins of an old western fort.

This bomb shelter-themed bar has barely changed since it opened.

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

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

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

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

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

A 1930’s courtroom where John Dillinger and his gang went before a judge.

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

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

A living museum of curated gardens honors 4,000 years of agriculture in the Santa Cruz River basin.

A rare wayfinding portmanteau of “Street” and “Avenue.”

Some of Arizona's best spit-roasted tacos al pastor can be found here.

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.

This church on a Tohono O'Odham reservation has stood since 1797.

One of the largest open-pit copper mining operations in the entire country.

America's only nuclear missile silo open to the public.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

This giant steer-skull edifice refuses to die.