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

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

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

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

This bridge was constructed from the rubble of the infamous Bastille.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

A giant floating rubber duck-bunny painted with a different design every year.

This giant wire frame man sculpture is crouched in contemplation.

A statue of the second-tallest Dutchman in history.

Science meets wall art to highlight the beauty of famous mathematical equations.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

The largest 19th century panorama in the world still in-situ.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.