The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A miraculous natural phenomenon known as "the spring that breathes."

This rural museum highlights Wyoming's era of trapping and fur trades, and hosts the annual Green River Rendezvous in July.

The world's largest mineral hot springs is home to a herd of bison, a free public bath house, beautiful mineral formations, and a terrifying swinging bridge.

The rockpile was the founding landmark for the town of Gillette, and is now the home of the region's history.

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

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.

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

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

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

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

Just a man taking his prehistoric pet for a stroll.

A fitting attraction for the corn capital of the world.

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

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

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

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.