The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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

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

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

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

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 man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

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

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.

Legend says train robbers stashed their gold within the depths of this unusual cave.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

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

Despite a recent paint job, the factory still sits empty.

America's only nuclear missile silo open to the public.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

The only road through the heart of Glacier National Park.

Two massive rock outcroppings on the Oregon coastline.

A massive sea stack famous for its appearance in The Goonies.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

The first declared National Monument in the United States.