This curious, round temple is the oldest still-standing marble building in Rome.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

A beautiful discovery site of prehistoric burials.

A stunning hermit's shrine on a steep rocky spur in Northern Italy.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

Take a giant yellow bird cage to the top of Elba's highest mountain.

This ancient Roman arch misled treasure hunters for centuries.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

The oldest volcanology research center in the world.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

This scenic fortress dates back at least 2,400 years to the time of Magna Graecia.

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

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

This ancient market is often referred to as the oldest shopping mall in the world.

This overgrown mountain village has been abandoned for nearly a century.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

This serene, turquoise lake in an extraordinary nature reserve showcases a rare natural phenomenon.

A quiet Sicilian village is home to a cafe that had an important role in "The Godfather."

This amazingly preserved Doric temple was abandoned before it was ever completed.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

The bright red cars take travelers through breathtaking Tuscan scenery.