Although nearly 700 years old, the rows of choir stalls have been preserved in excellent condition. These were built during the period from 1300-1370 and they were used by the monks for holding their seven daily prayer services. The stalls were originally placed a few metres eastwards towards the main altar. The reason for the longitudinal positioning of the stalls lies in the fact that the Gregorian hourly prayers were sung alternately by the monks on either side. 