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

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

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.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

These aggressively sustainable art homes look like something out of 1970's science fiction.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.