When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

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 poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

The Wright Tavern is possibly the most important building in Concord Massachusetts to the American Revolution.

This abandoned prison castle has become an imposing gallery of graffiti art.

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

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

The home used in just a few seconds of film that came to define the setting of a hit sitcom.

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

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

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

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

One of the world's earliest skyscrapers.