Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

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

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

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

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

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

The relics of dozens of martyrs are stored in a single chapel.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

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

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

Numerous stone coffins from different centuries, lined up in a sixth century basilica.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

This clifftop arch is a natural stunner.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

The disputed geographic center, or "navel," of Italy.

One of the four sanctuaries of Rieti's Holy Valley was the site of the first living nativity scene.

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