Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

See six states from the newly restored 100-year-old historic roadside attraction.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Miraculous tree that seems to sprout out of solid rock.

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

One of America's largest retail chains got its start in one of its most remote rural destinations.

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

This sandstone building is a relic of the Overland Trail.

A devilishly named gorge that was a sign of salvation for many pioneers.

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

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

This Wyoming town is fascinated by a particular mythical creature.

This rustic old building is said to be the most photographed barn in America.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

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

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

At the time of its completion, it was the tallest dam in the world.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.