Clairvaux Abbey (Clara Vallis) was a Cistercian monastery in Ville-sous-la-Ferté, 15 kilometres from Bar-sur-Aube. The original building, founded in 1115 by Bernard of Clairvaux, is now in ruins; the bulk of the present structure dates from 1708. Clairvaux Abbey was a good example of the general layout of a Cistercian monastery.
From 1808 to 2023, the grounds were occupied by Clairvaux Prison, a high-security prison. As of 2024, it is in the process of being transferred to new ownership as a site oriented toward tourism.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).