This octagonal rotary jail built in 1889 now serves as a visitor's center.

A frog crossed this road, but whether it made it to the other side remains a mystery.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

More than 12,000 years ago, this park was a playground for mastodons.

A collection of soda memorabilia that spans decades.

How did the front of a supersonic jet make its way to a display case in a Kansas City yard?

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

The only mill in the state that features a covered bridge.

Stand at the point where the two mightiest rivers in the United States converge.

A version of this picturesque mill has existed since the 1800s.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

This 1854 courthouse along the Mississippi River has a storied history.

The longest of the four remaining covered bridges in Missouri.

The iconic remains of the original Academic Hall that burned down in 1892.

An underground river pushes more than 200 million gallons out of this Missouri spring every day.

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.

The largest riverfront opening cave in the Ozarks.

Rusted and decayed, this former mining site is a portal to the past.

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

This museum features the original car used on the Beverly Hillbillies sitcom.

Outside the Missouri Quilt Museum, this large spool has more than one million yards of thread—and counting.

A historic, scenic mill that was forced to close due to overlogging.

Around 50 million gallons of water flow from this spring every day.

Two Ming Dynasty lion statues guard the entrance to the journalism school.