The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

One of the largest, oldest, darkest, quietest motel rooms in the world.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

An homage to everyone's favorite prehistoric cartoon family.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

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.

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

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

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.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.

This mountain tram provides stunning views while hanging from a single, steel thread.

In 1967, murder and mayhem disrupted the tranquility along this quiet stretch of Old Route 66.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Some of the Old West's most notorious outlaws frequented this mining town.

Search for traces of the dinosaurs that roamed here more than 90 million years ago.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

A mecca of Mexican art and cuisine just over the border.

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