The castle consists of eight large round towers with connecting walls, a large hall, an outer and an inner ward. The entrance to the castle is on the western side, but not through a gatehouse as one was not needed because the town itself was defended. The orginal outer gateway has been destroyed but would have had a drawbridge. The inner ward is rectangular and has four towers at its corners. These would have been used by important visitors. To the east of the inner ward is a barbican with a small exit.