The unedited photograph called "Bliss" has graced the screens of over a billion computers.

The rodent-shaped sidewalk imprint that earned worldwide media attention.

The seventh largest spring in the world.

Where the author wrote her beloved "Little House" books.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

Away from the crowds of fishing enthusiasts, take a hike deep into the woods and journey into an eerie darkness.

A 40-foot waterfall flows into this unique natural swimming hole.

From a canyon-like gorge, more than 20 million gallons of water emerge every day, while a smaller spring drips down, creating the illusion of an endless, gentle waterfall.

First crafted during the 19th century, the mill was fully restored in 1983.

Some of the oldest exposed rock formations in the United States.

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

A wonderland of caves in eastern Iowa.

What was once a communal kitchen now serves heaping portions of hearty German fare.

Step back in time while shopping inside this local store.

An underground wonderland in Iowa.

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

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

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

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.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.