A brutalist gem towering over the heart of Milan.

Drink wine handed out through a window as part of an age-old tradition.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Fortified medieval tower house with lovely roof garden.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The secret medieval communication system will whisk your words above the noise of the crowd.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

These small, triangular, colorful houses are a staple of Madeira Island.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

The world's largest reflecting pool is just two centimeters deep.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Baroque celebration of the end of the Great Plague of Vienna.

This building has survived for more than a century and remains virtually untouched.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

This small museum in a 17th-century building honors three iconic Scottish writers.