 Thus, from a high, rectilinear square-planned tower, intended for surveillance and sighting, it turned into a small fort with a much wider base and larger battlements on the first floor, well-equipped according to the latest military defensive techniques.A ramp, that ran along three sides of the stronghold, allowed access to the battlements and was meant to facilitate transport of weapons, artillery and other such loads with the help of animals.The vast rooms at the ground and first floors were used as headquarters for the Este soldiery, whereas the prisons were located in the dark basement.