Da Vinci's equestrian statue, 500 years in the making.

The mark of the Devil's horns on a marble column in Milan.

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

This medieval castle was reconstructed by Carlo Scarpa.

Pilgrimage site for star-crossed lovers.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

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

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

The secret medieval communication system will whisk your words above the noise of the crowd.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

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

Rome is now home to a stunning food museum and library.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

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

Venice's "Island of the Mad."

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.