The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This quiet park's strange sedimentary spires were named after Kodak's color film.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Rippling sand dunes frozen in the Arizona rock.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Dramatic river bend surrounds a natural red-rocked pedestal.

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

These mid-century motels once housed the workers who built the Glen Canyon Dam.

An homage to everyone's favorite prehistoric cartoon family.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

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

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

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

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

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.

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

The eroded core of an ancient volcano is now accessible by a short hike.

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

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

Thousands of glyphs created by an unknown culture decorate the rock formations of this canyon.

While you're unlikely to find riches here these days, this remote mine is a time capsule of the Gold Rush era.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.