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

The obelisk meant to mark the founding father's grave at Monticello is actually on the University of Missouri campus.

This historic cliffside mansion uses a natural cave for air conditioning.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

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.

One of America's first planned communities is preserved in a state park.

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

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

An adorably sweet display of sculpted Precious Moments figurines.

An abandoned factory along the Mississippi coated by a giant mural.

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

This is not your typical jungle gym.

Erosion and time have created a naturally-formed water park.

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

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

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

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

This mosaic-covered bar is brimming with curated curios.

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

This otherworldly church spire reaches up toward the heavens.

A kitschy, creepy St. Louis mainstay.