 A bird's-eye view of the cathedral and its monastic buildings, made in about 1165 and known as the "waterworks plan" is preserved in the Eadwine Psalter in the library of Trinity College, Cambridge.It shows that Canterbury employed the same general principles of arrangement common to all Benedictine monasteries, although, unusually, the cloister and monastic buildings were to the north, rather than the south of the church.There was a separate chapter-house which still exists, said to be "the largest of its kind in all of England".