Step into a cartoon at this Seoul café that aims to evoke a two-dimensional scene.

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.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

The only museum with its curator—and her pets—buried inside.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Two stone columns flank the grand Venice square, but there were supposed to be three.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Erotic art covers the walls of the largest ancient pleasure palace.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Pilgrimage site for star-crossed lovers.

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

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

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

Da Vinci's equestrian statue, 500 years in the making.

The mark of the Devil's horns on a marble column in Milan.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

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

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

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

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