Its inner ward is a quadrangle about 50 yards square, contained within four curtain-walls about 16 feet thick and 40 to 50 feet high. At the angles are four drum-towers, three-quarters engaged, of the height of the curtains. On the east and west sides are intermediate towers, half-round, with prolonged sides, of which that to the east, as at Kidwelly, contains the chapel. In the centre of the north and south sides are the gatehouses, of large size and something higher than the other towers. In each a quadrangular part projects into the court, capped at the two angles by round turrets containing staircases. Outside, half-round towers with prolonged sides flank the entrance. The ground-plan here given shows the general arrangement. [Illustration: _C. A. Buckler._ _Entrance to Beaumaris Castle._] [Illustration: BEAUMARIS CASTLE: ANGLESEY:] The great hall, 70 feet by 23 feet 6 inches, occupies most of the first floor of the northern gatehouse, and is lighted from the court by five windows, of two lights each, with a transom, as at Stokesley and Ludlow, contemporary halls. The fireplace was on the opposite side. The roof was of timber, but with one stone rib, as at Charing. The southern gatehouse probably also contained a large chamber, now destroyed. The state-rooms and lodgings were in the gatehouses. The portals were of unusual length, and each was guarded by three grates. The curtains are pierced lengthways by long mural passages, communicating with the tower chambers and the staircases, of which there are many. The rampart walk is of unusual breadth. Under a part of the wall, south of the chapel, the lowest mural gallery is a large sewer. The chapel, on the first floor, though not much above the ground level, is a beautiful little chamber, entered at its west end from the court by a flight of steps and a short passage traversing the mural gallery. On each side is a vestry. The actual entrance to the chapel is by a double door, trefoiled. The chapel is composed of two bays with a polygonal apse. The whole is groined, and the walls are panelled in two stages all round. There are five lancet loops opening upon the face of the tower, and two windows opening into the chapel, from the vestries. The chapel stands on a crypt, also vaulted. Outside the south gatehouse a sort of barbican, a hollow square of masonry, has been erected, having an entrance on its west side. It is an addition intended to prevent the portal being raked or carried with a rush.