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

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

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

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

A spiritual vortex among the red rocks in Sedona.

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

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

A reproduction of earth's many biomes.

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

A Wild West jailhouse that slid down the mountainside.

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

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

These petroglyphs created by ancient Arizonians have withstood centuries of exposure to the elements.

These free-roaming horses were once destined to disappear from the land.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This small, unassuming street is now a canvas for color and creativity.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.