Mézières-sur-Seine (, literally Mézières on Seine) is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the western suburbs of Paris, near the bank of the Seine west of Paris. The name of the commune comes from the Latin word: maceria, meaning walls. Sites of interest Saint-Nicolas church, built in the 13th century in Gothic style. A choir was added since the 17th century. It is a listed monument since 1931. See also Communes of the Yvelines department References Communes of Yvelines