A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

An underground wonderland in Iowa.

How did the 110-foot limestone statue cross the road?

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

Hidden in the grounds of the Fort Dodge Museum is a "real" and terrifying petrified giant.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

Most comprehensive museum in America devoted to one ethnic group.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

Millions of dollars worth of sculpture decorate this Iowa city center.

Lured here by the promise of tens of thousands in gold, Jesse James started a quintessentially American trend of robbing trains in-motion.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

An eclectic assortment of medieval architecture in a small Iowa town.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

The oldest extant wooden jail in South Dakota and possibly the United States. 

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

The lowest point in South Dakota and the source of the Minnesota River.

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

One devoted couple has donated multiple recreations of Michelangelo's sculptures to this South Dakota town.

Calidum et Deliciose Succosum!