This vintage train once gave new meaning to “swimming upstream.”

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

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

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

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

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

Just a man taking his prehistoric pet for a stroll.

A fitting attraction for the corn capital of the world.

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

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

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

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

At the turn of the 20th century, the Minnehaha County courthouse played host to sensational public divorce trials.

Inside this museum resides a boot fit for a giant.

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

Ever wanted to can Spam?

This massive roadside mascot was the first version of the giant to illustrate his butt.

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.

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

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

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

Half of a waterfall goes into the river while the other half seems to disappear.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.