These molds for fiberglass statues have formed an eerie, accidental sculpture park.

A bizarre house filled with an astounding array of collections.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

Millions of dollars worth of sculpture decorate this Iowa city center.

Home with Gothic windows featured in a famous painting.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

One of the world's earliest skyscrapers.

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

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

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

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

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

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

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

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

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

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

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

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

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

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

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

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