One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

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

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

This building has a giant piercing through one of its corners.

This tiny chapel withstood a massive mudslide and flash flood.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

Five candy-colored villages on the Italian Riviera.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

The "Mona Lisa" of funerary art.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This massive blockhead sculpture hides an entire library.

This stunningly massive housing complex is a go-to filming location for dystopian sci-fi cinema.

A monument to the “other Joan” who bravely defended the town of Beauvais with an axe in hand.

This ancient stele gives a testimony to the presence of the Syrian sun god Elagabalus on the Roman Empire's western frontier.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

Just off the city’s central station hides a quaint lamp-lit alley into medieval Elsinore.

Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.