A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

Art and armour fill every inch of this rich kid's Italian villa.

Secret refuge and museum of the Duke of Florence.

The giant skeleton sculpture is surprisingly well-traveled.

A Nesting Doll of Churches.

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

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

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

A fairy tale castle in modern Rome.

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

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

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

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

The glowing blue Nymphaeum of Emperor Tiberius.

The underground sanctuary of a mysterious ancient cult.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Architectureal fantasy quarter of Rome.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.