Lunn’s Tower is cylindrical, 36 feet diameter, and about 40 feet high, and stands three-quarters outside the curtain. On the outer face are four pilaster strips, 5 feet broad by 6 inches projection, which probably rose to the base of the parapet, now gone. They rest on a plinth, and the tower has two sets-off, of which they partake. Appended to the rear of the tower has been added a sort of half-octagonal turret carrying a well-stair—an early addition. The basement is at the ward level, and there are two upper floors containing fireplaces under segmental heads. The floors were of timber. The only openings are loops: those of the two lower floors are square-headed, placed outside in square-headed recesses, ending below in broad fantails like those of the keep. Within, they are placed in splayed recesses with segmental arches. The basement has a door from the ward, but the upper floors are reached by the well-stair, which also opens on the contiguous curtain. This curtain on either side for some yards has been removed; but fragments remain, and show that a small, round-headed arch sprung on each side from the tower to the curtain and supported a garderobe at the rampart level over the hollow angle. Close in the rear of this tower is a well, lined with ashlar, 4 feet diameter. The curtain south of Lunn’s Tower has been breached for about 50 feet, and beyond this it is old and supports a range of stabling and farm buildings 170 feet long by 25 feet broad with square buttresses, in the centre of which is a large porch with diagonal buttresses and a wide entrance as for a barn, with a round-headed arch. The lower stage is of stone, and above is a stage of brick and timber. It is said to have been built by Thomas, Earl of Lancaster, in the reign of Edward II.; but much of it is certainly of far later date—in the late Perpendicular style. The curtain against which it is built is early English or Decorated, and the superstructure of the barn seems to be an addition, placed there when it was decided to have an upper storey. The arches are round-headed and look Decorated, but there are two late Tudor windows. The chapel was a few yards from this building.