Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

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

A Jenga-style cylindrical tower of books that appears to go on forever.

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

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

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A historic and beautiful Art Nouveau chamber in a historic railway station.

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

A surreal statue honoring Prague's favorite literary son.

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

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

Macabre astrological automaton clock dating to the late 1400s.

The hidden lair of an alchemist rediscovered in a 2002 flood.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Venice's "Island of the Mad."

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This former train tunnel is filled with lines from a poem crafted by Robert Louis Stevenson.

In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

A small granite monument marks where the borders of three countries meet.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.