A small museum dedicated to mustard making inside a still-working mill.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

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

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

When this 400-year-old fountain fell into disrepair, officials covered the mess up with what looks like a giant soup tureen.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

A hidden workshop for creating and restoring Papal mosaic masterpieces.

Breathtaking and huge 430 year old maps of Italy.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

This is the oldest Roman-made bridge in the city still existing in its original state.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

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

An ancient Roman temple first dedicated to an emperor's wife is now a church.

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

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

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

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

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

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

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

A Nesting Doll of Churches.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.