Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

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

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

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

A self-built castle made by a mysterious man.

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.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Community owned and operated, this property is home to a diverse set of nudists.

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