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

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

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

This town is home to the world’s largest arch constructed entirely of elk antlers.

A small Wyoming town is home to the state's oldest-operating soda fountain.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

This Wyoming town is fascinated by a particular mythical creature.

Population: 1.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

A popular rock that acted as a waymarker for American pioneers.

Miraculous tree that seems to sprout out of solid rock.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

One of the smallest towns in the United States.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.