This ghost town was once a cult-like religious utopian settlement.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

A replica that won't float away.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Dig for your own trilobites in this goldmine of invertebrates.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A house carved into a rock in the 1940s.

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

No Gordon Lightfoot song, only a barebones monument to greed.

This Wyoming town is fascinated by a particular mythical creature.

Population: 1.

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

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

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.

One of the smallest towns in the United States.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Native Americans built this circle of stones, which was used to predict astronomical events.

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

A lifetime's accumulation of bric-a-brac and kitsch.

More than 150 working bells from churches and one-room-schoolhouses across the Great Plains are assembled in one man's yard.

Whimsical cartoon cars suspended on posts soar over an automotive shop.