A popular rock that acted as a waymarker for American pioneers.

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

The world's largest Holstein cow.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

An impressive collection of farm equipment and other artifacts from life on the prairie.

This stone, said to have once been a young woman, is sacred to the Dakota and Lakota nations.

This six-building complex is the home of the world's largest steer.

One man's quest to save his town with a trail of record-breaking sculptures.

An ode to South Dakota's state fish.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

This Wyoming town is fascinated by a particular mythical creature.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Population: 1.

The first declared National Monument in the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

One of the first intercontinental ballistic missile sites in the United States.

This geodesic gallery holds a collection of painted spheres that make traditional canvases look lazy by comparison.

A ghost town now swarming with dozens of prairie dogs.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

The world's largest model of our planetary system.