When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

A sharp bend in a dramatic river canyon cut through red rocks.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

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

A late-19th century diversion canal built by hand crosses Bryce Canyon National Park and is still in use.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

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.

The drama of nature in full effect in this Nevada State Park.

Named after an outlaw who used the basin as a hideout.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

A homage to the King at the hotel where he revived his career.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Marta Becket's hand-painted theater in the desert.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

One of the ghostly stops along Route 66.

A wondrous place to watch a special flower bloom.