THE EMPEROR HADRIAN AND ANCIENT ROMAN ARCHITECTURE Castel Sant'Angelo (Mausoleum of Hadrian). Architecture and Light.›The Mausoleum of Hadrian had a temple on the top, with a statue of the Quadriga of the Sun driven by the emperor himself in the guise of Sol Invictus, the invincible Sun god. Over the centuries it was plundered of its marbles and most pre... To read the full article you must log in or register. Login or register