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

An Italian hillside ghost town.

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

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

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

The glowing blue Nymphaeum of Emperor Tiberius.

A fairy tale castle in modern Rome.

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

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

Geothermal waterfalls in Tuscany.

Thousands of well-dressed mummies below a monastery.

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

Stalactites and stalagmites in a beautifully lit cave.

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

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

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

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

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

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Renaissance villa and gardens complete with a tormented colossus.

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

2300-year-old Roman road connecting the empire.

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

The underground sanctuary of a mysterious ancient cult.