A former sanitarium where soldiers were sent to recover in the healing waters of hot springs.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

A museum dedicated to the history and art of staying clean.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

Jail from the 19th century that was built by inmates.

This museum glorifies the humble potato.

This spectacular track has run continuously since 1882.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A sandstone canyon wilderness with a history of outlaws, mysterious disappearances, and a UFO encounter.

One person’s lost luggage is another person’s treasure.

The world’s first museum dedicated solely to electric vehicles.

Vulture Mine was Arizona’s most productive gold mine, and instrumental to the development of Phoenix.

Giant steel and concrete dinosaurs near Route 66 invite passerbys into a mineral shop.

More than a century old, this trading post resides in the Navajo Nation.

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

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

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

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

A tribute to the statues of Easter Island along Route 66.

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

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

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

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.