Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

The iconic remains of the original Academic Hall that burned down in 1892.

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

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

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

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

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

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

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

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

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

A chessmaster's dream destination.

This is not your typical jungle gym.

One of few surviving standpipe water towers in the U.S.