This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

The unusual burial monument of Arizona's first governor.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

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

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.

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

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 fading, forgotten remains of a once bright and booming factory.

Limestone caves with spectacular showcase chambers.

The Magical World of George Phar Legler.

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

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

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

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.

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.