The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Where Venice's gondolas go for a tune-up.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

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

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

Vast network of air raid tunnels beneath Lombardy's capital.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

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

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

Geometry and mystery come together in an epic show of octagonal masonry.

Ride a boat through this magnificent underground world, which now doubles as a theater.

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

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

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

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

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

This is the oldest Roman-made bridge in the city still existing in its original state.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

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