Royaumont Abbey in Val-d'Oise offers a Cistercian brunch on the last Sunday of each month. The buffet is served under the Gothic vaults of the refectory of lay brothers, frequented by the laity eight centuries ago.

“Today we have 110 seats, our maximum, although this is only the second time that we have offered this formula,” confides Jean-Philippe, head waiter. ‘The setting is truly magnificent,’ raves Robin, who came from Eaubonne.