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

Its interior is adorned with some of the best examples of early Christian mosaics.

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

Breathtaking and huge 430 year old maps of Italy.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

These spartan apartments are provided to clergymen visiting Vatican City.

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

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

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

An enigmatic modern marker left next to a historic Roman site.

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.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

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

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

This small church was constructed over the ruins of three temples dating to the Roman Republic.

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.

The "Great 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.

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

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

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

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