 The fourth entrance, to the east, was sacrificed to make room for the kitchens.At the bottom, the appearance of the building still recalls a mediaeval fortress, but higher up, da Carpi replaced the battlements with elegant balconies in white stone (resting on series of corbels), making it higher again by constructing a higher storey, covered by a skew roof.The towers were improved and made more graceful with roof terraces.