The Villa Adriana (at Tivoli, near Rome) is an exceptional complex of classical buildings created in the 2nd century A.D. by the Roman emperor Hadrian. It combines the best elements of the architectural heritage of Egypt, Greece and Rome in the form of an 'ideal city' - http://whc.unesco.org/en/list/907
|What is this, a Roman Villa for ants?!|
The highlight is definitely the Maritime Theatre, which was really Hadrian's private apartment within his own palace, complete with a moat, though the drawbridge no longer exists. Ah, the perks of being an emperor.