Refectory at Penmon Priory

The refectory at Penmon Priory is a significant, roofless structure that consists of three stories of monastic buildings made from local rubble masonry, featuring limestone dressings and large boulders as quoins. The refectory itself has five windows, including three narrow lights for the dormitory and three openings leading to the cellars below. There is a doorway on the left and narrow windows with deep slayed reveals on the right. The west return of the building has a tall lancet window at the gable apex and two rectangular lights for the refectory. A blocked arched window is visible from the cloister courtyard to the north.

An addition known as the warming room is located at the eastern end, which has similarly styled cellar openings and a doorway on the right. The east gable features a single first-floor window with paired arched lights and square-headed openings on each floor, along with doveholes in the gable apex.

Inside the building, the positions of each floor are clearly marked in the masonry, visible as ledges along the lateral walls and joist holes. The warming room retains fireplaces on both the lower and first floors; the first floor fireplace has square jambs and an elliptical arch, with a small carved bust on the left jamb. In the northeast corner, there is a small doorway leading to a narrow passage that connects to a garderobe, which features a corbelled vault and a blocked loop in the east wall.