This giant green head remembers one of America's jazz giants.

A small town garden is dedicated to a psychic dog with the most soulful eyes.

This otherworldly church spire reaches up toward the heavens.

An abandoned factory along the Mississippi coated by a giant mural.

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

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

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

A piece of John the Baptist in the American heartland.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

A remarkably opulent mansion with a tragic history.

An abandoned concrete jungle surrounded by a lush park.

Like Stonehenge, but with boats and oodles more charm.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

This historic cliffside mansion uses a natural cave for air conditioning.

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

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

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

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

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

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.

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

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.