Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

An urban forest overtakes what was the greatest failure of utopic urban housing.

A museum celebrating the Victorian obsession with hair art.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

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

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

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

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

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

An abandoned concrete jungle surrounded by a lush park.

Like Stonehenge, but with boats and oodles more charm.

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

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

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

A remarkably opulent mansion with a tragic history.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

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

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

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

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

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

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