A narrow fjord-like lake, the third-deepest in the United States, runs for over 50 miles into the Cascades of Washington state.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

This family-owned restaurant celebrates Native American cuisine.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

One of the last socialist halls still standing in the United States.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

An architect's childhood fantasy treehouse made real.

This museum details the history of a local miracle: The return of the critically endangered black-footed ferret, which was once believed to be extinct.

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

Locally known as the "Onion” and the "Egg Beater,” Casper’s most recognizable buildings are beloved local landmarks to many, and eyesores to others.

This Wyoming town is fascinated by a particular mythical creature.

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.

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

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

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

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

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

One of the largest private collections of fossils in the world.

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

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

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

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