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

A unique collection of artistic rides

The lobby of this hotel near the U.S.-Mexico border features a stained-glass mural that measures 42 feet long and 6 feet tall.

The former home of the army detachment that captured Geronimo.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

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

An excursion train traverses a picturesque red-rock canyon along the Verde River.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

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

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

This comprehensive collection features Native American artifacts dating back centuries.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

The stone-covered graves lie within the ruins of an Old West ghost town.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

Giant telescope mirrors built in a spinning furnace under a college football stadium.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

This scrap yard doubles as a naive art gallery full of found art and farm animals.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

A cabinet of curious mathematical models and old calculators.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.