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

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

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

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

A forgotten "city of water" underneath the famous Trevi district.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The Pope’s secret escape route.

A collection of objects supposedly singed by the hands of souls in purgatory.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The final resting place of the poets Shelley and Keats.

The underground sanctuary of a mysterious ancient cult.

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

An alchemist's "magic door" stands in the middle of a Roman park.

Architectureal fantasy quarter of Rome.

A special area of the National Archaeological Museum of Naples is located inside a metro station.

This medieval city gate is now a blend of the past and the modern world.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.