A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

The world's largest collection of the world's largest objects is in one small Illinois town.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

Even with its slightly risible name this colossal cross is still able to inspire awe.

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

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

A sculpture of a giant man escaping from the depths of the Earth.

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

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

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

This is not your typical jungle gym.

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

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

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

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

A kitschy, creepy St. Louis mainstay.

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

This monument traces the segregation line that inspired the first rural branch of the NAACP.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

At 207 feet, one of the world's longest continuous escalators.

The site of the climactic scene from the classic horror film is now a historic landmark.