One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

This quirky curiosity shop takes its cues from the world's bazaars.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

Site of the 1926 murder trial of Ernest Burkhart who was involved in the "Reign of Terror."

Claims to be the "World's Highest Hill."

A small wooden boat once owned by legendary actor Errol Flynn sits inside this Oklahoma gas station.

At Oklahoma Panhandle State University, a plaque marks a place once known as No Man's Land in the linear world and the fictional Kcymaerxthaere as well.

One of New York's most iconic authors is strangely honored by this Oklahoma park.

A tiny but mighty little pumper sits in the middle of the street, waiting for the next big oil strike.

This small-town museum is dedicated to the original western movie mega-star.

Home to the story of the outlaw turned funhouse mummy, Elmer McCurdy.

A larger-than-life monument to the overlooked women who braved Western expansion and broke down societal barriers.

Dad jokes and wordplay abound in this comic fake cemetery.

A half-size replica of the World Trade Center towers above Tulsa.

The modest childhood home where the baseball legend and Yankees star learned to hit from both sides of the plate.

This beacon for pre-radar pilots once guided Charles Lindbergh to a safe touchdown in Tulsa.

It reportedly took three years to sort through all the objects in this eclectic lifelong collection.

This highway overpass was named after the tragic disappearance of a young mother who got mixed up with the wrong people.

This unusually circular centenarian barn became a Route 66 icon.

The Quapaw tribe supplies the meat and produce in this Oklahoma casino restaurant.