A historic hydroelectric power plant serves as the unusual backdrop for a public park.

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

This small memorial is dedicated to the Perryville State Prison firefighters who perished fighting the Dude Fire in 1990.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

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

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.

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

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.

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

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

Once disputed as the largest sundial in the world.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

A historic jail preserves etchings from over a century of incarcerated people in a town with a rough and tumble past.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

A monument to the frontier doctor who came up with the idea of delineating highways with a painted line.

An off-grid art installation that encourages its visitors to imagine a world without waste.

A scrap-metal sculpture recalls an infamous 19th-century camel.

Ancient human, animal, and geometric figures drawn in the earth.

Two geoglyphs that are truly unique to North America.

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

An early 20th-century jail not far from the infamous Tombstone, Arizona.

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

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.