Island where motor vehicles are banned -- home to the only carless highway in the United States.

A spooky defunct railroad tunnel now part of a sprawling trail.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

The watery grave of an impractical idea.

A former atom smasher turned into an art gallery.

Explore an underground labyrinth of miniature railroads.

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

The face of a woman pushes its way through the earth.

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.

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

This art gallery and oddities boutique bewitches visitors with a trove of occult trinkets and eccentric antiques, work by an ever-changing roster of underground artists, and classes in tarot and other mystic arts.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.