This ancient Roman aqueduct once funneled water to Diocletian's palace.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

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

Third time's a charm, or in this case, two testicles are.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

A rather vulgar example of the transition from Latin to the Italian vernacular.

A Nesting Doll of Churches.

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

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

Ancient snack bar of the Roman Empire re-opened.

This Roman amphitheatre was also the location of the first gladiator school.

A sulfuric hellscape in southern Italy.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Virgil's many-mouthed gateway to the underworld.

A tree that defies gravity grows in an ancient ruin.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

Smack-dab in Campania’s volcanic fields, this scenic lake was once thought to be the gate of hell.

The remains of this medieval Roman road and lookout towers dot the rugged coastline of southern Lazio.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

A Roman temple perched over an Italian town, forgotten several times over.

This large, circular tomb is the final resting place of the first emperor of Rome.