America's only nuclear missile silo open to the public.

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

A reproduction of earth's many biomes.

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

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

It's easy to forget what century it is as you wander this rustic homestead.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

This spectacular track has run continuously since 1882.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Home of the International Space Hall of Fame.

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

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

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