Home to the only outdoor municipal elevator in the United States.

Site of the greatest known waterfall that ever existed.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

"Polynesia on the Plains."

An entire town preserved as a historic landmark.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

These giant metal horses graze on a hilltop near the Montana highway.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

New fungal and bacterial species call this deadly lake home.

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

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

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

A cemetery housing wild west legends in South Dakota.

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

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

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

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

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

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

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

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

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Home of the International Space Hall of Fame.