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

The remnants of a creative early method of wildfire prevention.

The eroded core of an ancient volcano is now accessible by a short hike.

An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

Inside this store, a mysterious statue draws visitors from the world over.

A Wild West jailhouse that slid down the mountainside.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

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.

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

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

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

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

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

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

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Ancient pueblos built into the base of a natural canyon wall.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A unique collection of artistic rides

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.