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

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

Walk through the sets of old western films at this small museum in Utah.

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.

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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

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

Don't blink or you'll miss it.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

A spiritual vortex among the red rocks in Sedona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This memorial includes fragments from one of the greatest tragedies in United States history.

A motel dedicated to Southwestern nostalgia.

See massive fossils that are over 200 million years old in northeastern Arizona.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.