Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

The largest and most well-preserved petroglyph site in the Verde Valley.

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

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This tucked-away cemetery is the final resting place of a prospector who uncovered one of the largest gold mines in Arizona.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

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

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

A century-old miner's quarters turned mansion.

A memorial to the firefighters who died in an industrial disaster is housed in a small public park.

This golf ball–shaped former desert real estate office now houses a UFO museum.

Thousands of glyphs created by an unknown culture decorate the rock formations of this canyon.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

Two geoglyphs that are truly unique to North America.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

Built as a schoolhouse in 1914, this Mission-style building has also served as a dancehall, a library, an Army canteen, and now a cultural museum.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

A collection of anti-communist sculptures stands watch in the Mojave Desert.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

One of the ghostly stops along Route 66.