This medieval manuscript collection has some of the most obscure and ancient texts in the world.

This medieval castle was reconstructed by Carlo Scarpa.

This medieval city gate is now a blend of the past and the modern world.

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

This monumental fountain has moved around the city multiple times.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

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.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

The walls and streets of the ancient city are peppered with penises.

Italian cave with exceptional acoustics and an unsavory history.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

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

Ancient snack bar of the Roman Empire re-opened.

The world's most active stratovolcano is almost always erupting.

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

Five candy-colored villages on the Italian Riviera.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

Pompeii's less famous neighbor is still revealing her secrets.