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

This uniquely designed bridge served as the city gate for Comacchio.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

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

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.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

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

These medieval skyscrapers dominate the skyline of this small Tuscan town.

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

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

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

Ancient snack bar of the Roman Empire re-opened.

Pilgrimage site for star-crossed lovers.

Five candy-colored villages on the Italian Riviera.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

The glowing blue Nymphaeum of Emperor Tiberius.

2300-year-old Roman road connecting the empire.

The oldest operating pharmacy in the world features 800-year-old recipes.

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

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This demon atop the Notre-Dame de Paris looks utterly bored.