A marvellous art work that still today fascinates visitors: the Hall of the Giants, a room made to look like a cave, is decorated with representations of monstrous creatures waging an attack on the Mount Olympus and the heavens. Jupiter is fighting to defend his children. Giulio Romano turned the vault into a sky, with a series of not concentric circles. The perspective reaches a climax, something that was later imitated by many artists, with a canopy under which stands the throne of the king of the gods. Significantly it is empty, although there is an eagle that represents both Jupiter and the empire. The entire representation also has a political meaning, in that it alludes to the triumph of Charles V and the defeat of his enemy. It is interesting to see how the painter, probably Rinaldo Mantovano, creates a chaotic and indistinct crowd of divinities, almost hidden behind the white clouds, frightened by the march of the Giants who are about to fall, hit by lightening.