This one-time health resort was used by aristocrats around the world.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A whimsical bridge adorned with decorative dragons.

The largest fountain in Bratislava.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

A cableway for car transport.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A unique hotel for the artistic soul.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

Pilgrimage site for star-crossed lovers.

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

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

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

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