A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

European castle ruins in an American state park are actually the product of death and grief.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

The modest, restored home of the legendary ragtime musician John William "Blind" Boone.

This small town bank is very aware of its name thank you very much.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

This "little gallery in the middle of nowhere" is housed in a 170-year-old horse barn in the Missouri Ozarks.

Destroyed by flood waters, prison now serves as a training ground for armed forces.

An extensive collection of fine art devoted to man's best friend.

A floating museum that was sunk by a flood and left to rot in the tides.

A cave 150 feet beneath Kansas City is the perfect climate for growing 10,000 delicate orchids.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

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

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

One of the world's earliest skyscrapers.

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

A flat slab of stone perched hundreds of feet above the Gasconade River in the northern Ozark mountains.

This curious headstone is labeled simply as "The Queen."

This museum located in the "Corn Cob Pipe Capital of the World," chronicles the history of cob pipe.

After miraculously surviving a giant flood, the 19th-century nut tree and its offspring are protected with their own tiny park.

This mansion was made famous by its colorful cast of owners and location along the Sante Fe Trail.