This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

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

This ancient Roman arch misled treasure hunters for centuries.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

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

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.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

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

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

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

This statue is the only female representation of Rome's "talking statues."

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

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

A statue representing a lost Roman profession that was vandalized for centuries.

This ancient market is often referred to as the oldest shopping mall in the world.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A massive marble foot is tucked away in a small alley near the Pantheon.

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

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.