The fading, forgotten remains of a once bright and booming factory.

This church on a Tohono O'Odham reservation has stood since 1797.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

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

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

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

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

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

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

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

An urban laboratory.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

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

A self-built castle made by a mysterious man.

The unusual burial monument of Arizona's first governor.

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.

A former department store turned into a quirky restaurant.

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

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

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