Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

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

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

An artificial crater field that trained astronauts for lunar exploration.

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

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

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

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

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

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."

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

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

It's safe—and permitted—to walk across these twin natural sandstone arches.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Many generations of travelers have passed through the steep, smooth walls of this canyon.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

$10,000 won in a poker game in 1884 allowed James Draughon to build this intriguing home.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

Mariners once used this prehistoric landfill as a navigational landmark.