Five candy-colored villages on the Italian Riviera.

Ruins of a 10th century church tucked away deep in a botanical garden.

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

This 16th-century monastery has been turned into a surrealist architecture compound.

An Italian hillside ghost town.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

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

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

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

The glowing blue Nymphaeum of Emperor Tiberius.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Geothermal waterfalls in Tuscany.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

The underground sanctuary of a mysterious ancient cult.

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

Stalactites and stalagmites in a beautifully lit cave.

The middle finger of modernity.

Pompeii's less famous neighbor is still revealing her secrets.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

Ancient snack bar of the Roman Empire re-opened.