This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

Naturally carbonated water fills the mineral baths at this 19th-century California resort.

A hidden gem of a saloon in the middle of a ghost town.

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Come for the speed, leave in love with the desert.

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

A ghost town that held steady longer than most, but finally gave up the ghost.

An improbable waterfall springs from an orange-white cliff face, tumbling into the headwaters of the Virgin River above Zion National Park.

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

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

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.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

A small flooded ghost town with a few scattered structures remaining.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Largest man-made excavation on earth!

Incredible sculptures inspired by obscure passages from the Bible.

Pyramid home to an obscure religious group that practices modern mummification.

"May the force be with you always."

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.