This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Romans built the world's tallest artificial waterfall in 271 BC.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Berlin's old airport.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

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

The most visited, and possibly most controversial, museum in Germany.

This colonial fort is an intriguing example of Renaissance military architecture.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

A garden of flying flowers.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

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

Rediscovered in 1992, this abandoned medieval village once flourished by fishing and piracy.

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.

What was once a bustling mining installation is now a bustling hub of contemporary art.

A man throwing a giant severed hand towers over Antwerp’s main square.

A beer pipeline runs beneath Bruges.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

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

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Christ's blood preserved in a Belgian town.

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

One of Hollywood's most iconic actresses was born in an upscale Brussels neighborhood in 1929.