It is a fortress built by the Crusaders on an island in the Lebanese city of Sidon in 1228 AD, and it is about eighty meters from the beach, and linked to it by a rocky bridge built on nine arches. Which was used in building the castle, and the eastern section of the castle was its main center, which is a large tower with several gates from the southern side, its remains are still visible today, and one gate from the eastern side is still standing as well, and the length of this The tower is twenty-seven meters high, twenty-one meters wide, and its construction is huge, with thick walls, columns made of granite were used in its construction.