Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

A ghost town now swarming with dozens of prairie dogs.

Just a man taking his prehistoric pet for a stroll.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

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.

An ode to South Dakota's state fish.

The final resting place of the Hunkpapa Lakota leader Tatanka Iyotaka, commonly known by the English translation Sitting Bull.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

A true roadside icon standing on the same plains that the herds once roamed.

A monument to the forgotten French explorers and their landmark expedition.

The arch that celebrated the completion of the Lincoln and Victory highways.

Chef Lawrence West serves up Indian tacos, wojapi, and other Lakota dishes at the brick-and-mortar incarnation of his popular food truck.

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.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

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

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

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

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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

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

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

The first declared National Monument in the United States.