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

Rippling sand dunes frozen in the Arizona rock.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

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

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

Canyon walls shrouded in ferns.

A huge musical instrument played by the ocean.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The remains of an early 1900s dude ranch that operated until the 1970s.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The first declared National Monument in the United States.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

Legends surround this jagged rock formation in the New Mexico desert.

A little-known hot spring haven right below the highway.

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."

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

Despite its name, this route in southern Utah offers a heavenly day trip.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

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