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

Man-made geyser that rises to the exact height of the Gateway Arch.

One of the world's earliest skyscrapers.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

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

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

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

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

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

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

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

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

This unassuming riverbank is Missouri’s first designated site in the National Underground Railroad Network to Freedom.

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

During the 19th-century, this park was a vital trading fort.

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

One man's unrequited love stands in a glass box forever.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

This is not your typical jungle gym.

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

A wax effigy of St. Valentine hides one of the saint's relics.