These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

Historic medieval fortified city in southwest France.

The way that light hits a stained glass window on a specific day is one of many "clues" to a mysterious treasure.

French commune at the heart of conspiracies.

See what remains of a once grand ancient Roman circus.

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

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

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

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

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

Five candy-colored villages on the Italian Riviera.

The bomb-ravaged remains of of a colossal Neptune.

On the walking path from Monterosso to Vernazza, a small shrine dedicated to feline friends.

A lover's walk between hilltop towns, decorated with graffiti love notes.

A serious museum dedicated to two German comedians.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

A 12th-century Italian skirmish gets reenacted with 500,000 pounds of flying citrus.

A fake medieval village in the middle of Turin.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.