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

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

2300-year-old Roman road connecting the empire.

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

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

Geothermal waterfalls in Tuscany.

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

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

The underground sanctuary of a mysterious ancient cult.

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

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A fairy tale castle in modern Rome.

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

Jesus' footprints and the first catacombs in the world.

An Italian hillside ghost town.

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

Architectural monsters are devouring this palace's every door and window.

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

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

The final resting place of the poets Shelley and Keats.

The middle finger of modernity.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

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

The yawning maw of this pagan visage is said to bite off the hands of liars.