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.

This is not your typical jungle gym.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

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

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.

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.

The commemorative stone column conceals a secret laboratory.

A naturally mummified 2,000-year-old man.