This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

This giant green head remembers one of America's jazz giants.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

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

A mysterious light of unknown origin on the backroads of Missouri.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Giant granite rocks standing end-to-end like a train of circus elephants.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Less a museum than a bizarre fantasy world created by artists and engineers.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

Why settle for barbecue chips when you can get actual barbecue?

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

An extravagant western hotel where every floor is the "ground floor."

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This century-old roadside attraction is full of bizarre rock formations.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

The Ozarks' strangest dwelling.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The only diamond mine in the world where you can keep what you find.