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.

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

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

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

A roadside collection of over-sized iron creations that are a bit more macabre than most.

A 20-foot-tall egg painted in a traditional Czech patterns by the Czech community in Wilson, Kansas.

An idle pastime becomes a record holder in Boys Town, Nebraska.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

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

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

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

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

A notorious Route 66 eatery once frequented by Al Capone.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

One man's unrequited love stands in a glass box forever.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.