For decades, this waterfall remained hidden because of an artificial dam.

Beside a busy highway, a colony of Great Blue Herons raises hundreds of offspring each year.

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

Home of a French nobleman's short-lived attempt at raising cattle in the Badlands of North Dakota.

The first declared National Monument in the United States.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

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

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

The only retired U.S. nuclear missile silo that is open to the public.

A small Wyoming town is home to the state's oldest-operating soda fountain.

Calidum et Deliciose Succosum!

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

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

One of America's first dinosaur parks gives a window into Depression-era paleontology.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

Every president in history is immortalized in bronze in downtown Rapid City.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

The oldest extant wooden jail in South Dakota and possibly the United States. 

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

A tribute to Loveland’s most famous sweethearts, who helped spread cupid’s message to millions.