A striking lighthouse with views of the Gulf of Mexico and of a military air show.

A wonderland of caves in eastern Iowa.

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.

An epic statue dedicated to the memory of the 9th and 10th Cavalry Regiments of the U.S. Army

A massive museum preserving the United States culture and the home of Abraham Lincoln's sleigh.

Three historic trains run on a half-mile track that features a tunnel.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

This art deco masterpiece was once a miracle spring mecca but is now simply a government office building.

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

This unconventional used book store was once in the news for the surprising act of burning books.

A remarkably opulent mansion with a tragic history.

A gem in the small Missouri town where Winston Churchill coined the term "Iron Curtain" and effectively began the Cold War.

A monument celebrating the Black soldiers of the 9th and 10th Cavalry.

Cannon designed to fire an atomic warhead.

A fitting attraction for the corn capital of the world.

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

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

The curios of pharmacist and collector Henry Wellcome.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.