A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

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

These free-roaming horses were once destined to disappear from the land.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

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

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Limestone caves with spectacular showcase chambers.

Ancient pueblos built into the base of a natural canyon wall.

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

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

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

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

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

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

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

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

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

Rippling sand dunes frozen in the Arizona rock.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.