In the Vennel (alley or small street) some ruins remain of the maison dieu, or hospitium, founded in 1256 by William of Brechin.
The Merveille (1203-1264) consists of two continuous buildings of three storeys, that on the east containing, one above the other, the hospitium (aumonerie), refectory and dormitory, that on the west the cellar, knights' hall (salle des chevaliers) and cloister.
The buildings devoted to hospitality are divided into three groups, - one for the reception of distinguished guests, another for monks visiting the monastery, a third for poor travellers and pilgrims. The first and third are placed to the right and left of the common entrance of the monastery, - the hospitium for distinguished guests being placed on the north side of the church, not far from the abbot's house; that for the poor on the south side next to the farm buildings.
There is also an "hospitium" for strange monks, abutting on the north wall of the church (Y).
The almonry for the relief of the poor, with a great hall annexed, forms the paupers' hospitium.