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

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

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

This giant middle finger statue sends an unambiguous message to Italy's bankers.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

A collection of objects supposedly singed by the hands of souls in purgatory.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

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

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

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

Five candy-colored villages on the Italian Riviera.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

An Italian hillside ghost town.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

The glowing blue Nymphaeum of Emperor Tiberius.

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 final resting place of the poets Shelley and Keats.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

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

2300-year-old Roman road connecting the empire.