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

The bomb-ravaged remains of of a colossal Neptune.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Ancient snack bar of the Roman Empire re-opened.

Romans built the world's tallest artificial waterfall in 271 BC.

This winding road through an Italian canyon may be the most scenic drive in the world.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

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

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Secret refuge and museum of the Duke of Florence.

The world's most active stratovolcano is almost always erupting.

One of the largest caves in the world open to the public.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

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

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

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

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Rome's semi-secret peephole vista is also a former Crusader stronghold.