This former abbey, founded in 1060 by Anne of Kiev (wife of Henri I,) is today a high school. The abbey's 12C bell tower, one of the slenderest and with the most latticework in the Île-de-France region, dominates the church, rendered more massive due to subsequent elevating and remodelling. The former abbey buildings, rebuilt in the 17C, sport a classic cloister enhanced by Doric colonnades and stone vaults adorned with simple coffering.