 The principal standing ruins are those of the Frater or Refectory hall of the convent, and are from the mid-12th-century phase of construction, in the late Norman or Romanesque style.The convent church, which had a central crossing, stood on the north side of the cloister, and on the east side (extending south from the south transept) was the range including the dormitory with its undercroft.Sibton is unusual among Cistercian houses in that the Frater (the standing ruin) formed most of the south range, aligned east and west, with the screens passage and kitchens at its western end and the dais for the high table at the east, where the great blank arch still remains in the end wall.