The cinder cone volcano with a less than complimentary name.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

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.

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

The only nuclear weapon assembly and disassembly plant in the U.S.

Outsider Art Community.

A spiritual vortex among the red rocks in Sedona.

An urban laboratory.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The end of times arrives, at least for the fish in the O.C. Fisher Reservoir.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

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

A self-built castle made by a mysterious man.

A multi-storied adobe complex has been inhabited for more than a thousand years.

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

The biggest solar telescope in the world helps reveal the secrets of our sun.

A unique geological area spiked with wind-carved rocks that resemble teepees.

See massive fossils that are over 200 million years old in northeastern Arizona.

Seller of surplus nuclear research materials.

A gargantuan crystal kingdom.