A series of playful yellow penguins share a serious message about the environment.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

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

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A Milanese café entirely designed by the American director Wes Anderson.

As can be expected from a centuries-old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

The shiny silver little brother to Copenhagen's Little Mermaid statue.

Preserved "bog person" that is over 2,000 years old.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

A symbol for the opposition to nuclear power around the world.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Old Danish castle immortalized in Shakespeare's Hamlet.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The first museum in the United States dedicated entirely to posters.