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

The cliff and rock formations are made out of Sioux Quartzite.

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

Calidum et Deliciose Succosum!

This sculpture gallery is home to magnificent beasts made of scrap metal and found objects.

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

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

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

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

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

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

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

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

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

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

Just a man taking his prehistoric pet for a stroll.

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

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

An obelisk commemorating Lincoln's role in connecting the coasts.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

Eight feet in diameter and more than 24 feet around.

An eclectic assortment of medieval architecture in a small Iowa town.