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 Grand Canyon’s original airport, which once welcomed pilots like Amelia Earhart and Charles Lindbergh, lies abandoned.

The former home of the army detachment that captured Geronimo.

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

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

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

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

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

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

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

The remains of a boarding school designed to forcibly assimilate Native American children.

Two geoglyphs that are truly unique to North America.

A giant mascot, a car bomb, and the mafia mingle in the history of a defunct restaurant chain.

This memorial includes fragments from one of the greatest tragedies in United States history.

The first steel dam in the world and the only one still functional in the United States.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

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

A replica of the flagpole that gave a frontier town its name.

A stone pillar commemorates the surrender of the extraordinary Apache leader.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Petroglyphs, bird watching, and a 100-year-old Ranch in one location.