This Renaissance square was at the center of Leonardo da Vinci's map, the first ichnographic ever.

Ancient catacombs form the foundation for this Rococo orgy of a church.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A spiritual sanctuary in a natural cave.

One of the largest squares in Europe contains an entire artificial island.

One of the oldest still-working clocks in the world sits on an ancient tower.

After World War II, this former concentration camp in Northern Italy became a refuge for those displaced by the war.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

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

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

The oldest church in Mantua was buried for centuries under the facades of other structures.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.

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

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This zoological museum began as the first great curiosity cabinet.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

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

The 1,000-year-old abbey is the birthplace of modern musical notation.

All that is left of this medieval castle is two towers, both of which now display a visible tilt.

Time has been frozen at this station since the bombing in 1980—or so it was believed.