Macabre astrological automaton clock dating to the late 1400s.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

Banished from town, this local jester concocted a clever return.

This statue of a studious young woman stands at the site of Leuven's first college to accept female students.

A giant bug impaled on a 75-foot-tall needle.

Intricate metal sculpture that's half gothic cathedral, half construction equipment.

A piece of the front end of a British cruiser that was used as a block ship in World War I.

The former home of a trailblazing surrealist is still filled with haunting dolls and grim paintings.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

A Museum of Psychiatry in a still-operating mental institution.

An unsettling sculpture of a boy hanging out in a street in Ghent has been baffling visitors for years.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Brussels' favorite peeing boy has a sister.

When you're a great Russian Tsar, even your vomit gets a statue.