This automated sculpture of two men peeing will spell out text messages with their micturition.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

Looming communist pillar with a Czech twist.

Countless grotesque faces stare out from this eerie Prague art wall.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

An abstract monument to a symphonic composer.

The world's first and only escalator for lazy bicycles and their daunted riders.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Cold war icon and onetime "hole" in the iron curtain.

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

Berlin's old airport.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The celebrated eyesore created by starry-eyed sweethearts.

Elaborate tile work in this railway station tells the story of Portugal.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.