sentences:  During the Middle Ages, the hill west of the Heidnischbiel, was fortified.In the 12th century the Viztum of Raron was established and the "Viztume" tower house was added to the hill.The tower The families of Raron, Asperlin and de Chevron-Villette all held the office of "Vizedominat" of Raron as a fief from the Bishop of Sion.