The Benedictine Abbey was built in the early 12th century, on a site which had long been regarded as sacred by pagans. It could well have been the site of a sacred tree, which the Christians cut down. The Rule of St Benedict encouraged gardening and the Abbey will have had a garden. A restoration plan was launched in 1987 and a decision was taken to restore the gardens according to plans and documents of archives dating from the 17th century. There is a cloister and the gardens have views over the Seine valley.