Limestone caves with spectacular showcase chambers.

"No writer ever gave more to a city and got back less.”

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

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

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

This curious, round temple is the oldest still-standing marble building in Rome.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

A 15th-century monumental Latin inscription on this house celebrates Lorenzo Manilio's love for Rome.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Breathtaking and huge 430 year old maps of Italy.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.