The Elephant Tower was planned by the architect G. Capula and was erected in 1307 to complement the other fortifications in Castello. Its name comes from a small elephant stone sculpture that is built in on a corner bracket of the tower. In the early 14th Century the Aragonese closed the northern part to use the tower as a residence and a warehouse: they used it also for a gruesome ritual; they used to expose, behind iron grids, the decapitated heads of those sentenced to death, as a warning to all.