The first declared National Monument in the United States.

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

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

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

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

A reproduction of earth's many biomes.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

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

This spectacular track has run continuously since 1882.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

When ecosystems collide in the arid Southwest.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A unique botanical garden housed in three giant geodesic domes.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

The palatial McDonald's that inspired Wesley Willis.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

A display of magnificent stained glass windows is the first exhibit of its kind.