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

A wartime promise becomes a shrine to Our Lady of Lourdes.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This huge clock made of flowers and simple machinery was once used a political weapon.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

A medical facility that has been kept frozen in time.

The palatial McDonald's that inspired Wesley Willis.

Huge abstract sculptures of the Puerto Rican Flag.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

To find the "unicorns of the deep" you've got to go downstairs.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.