World's first "penitentiary," meant to be humane, drove men insane.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

A huge enchanting public park just outside the ancient walls of Rome.

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

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

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

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

Gods clash with machines in a power plant regenerated as a museum.

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

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

Ancient snack bar of the Roman Empire re-opened.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The final resting place of the poets Shelley and Keats.

2300-year-old Roman road connecting the empire.

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

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

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

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