Located in the city of Rome, you will find Domus Aurea which used to be the home of emperor Nero. It got so enormous that at one point, people assumed that it covered one 3rd of Rome! Today, the place is reduced to ruins. But you can still witness the grandeur of the place, just from the ruins. You can think how large the place is. Emperor Nero sure know the way to spend his fortune! Palatine Palatine was one of the earliest castle to be built in Rome. Back in traditional times, Palatine designated prime property. Emperors once lived in this castle.