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.

A piece of stonework relief commemorates the site where the Devil's rage, and odd apparel, destroyed a house.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A beer pipeline runs beneath Bruges.

Christ's blood preserved in a Belgian town.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.