Épinay-sur-Seine is a commune in the northern suburbs of Paris, France. It is located 11.3km from the center of Paris. The church of Notre-Dame-des-Missions-du-cygne d'Enghien, designed by Paul Tournon, may be found in the commune.HistoryOn 7 August 1850, a part of the territory of Épinay-sur-Seine was detached and merged with a part of the territory of Deuil-la-Barre, a part of the territory of Saint-Gratien, and a part of the territory of Soisy-sous-Montmorency to create the commune of Enghien-les-Bains.Francis, Duke of Cádiz (13 May 1822 – 17 April 1902), king consort of Spain, took up residence at the château of Épinay-sur-Seine in 1881 until his death in 1902. The castle is currently the Épinay-sur-Seine city hall.Town twinningÉpinay-sur-Seine is twinned with: Oberursel, Germany since 1964South Tyneside (before 1974: Jarrow), England since 1965Alcobendas, Spain since 1986TransportÉpinay-sur-Seine is served by Épinay-sur-Seine station on Paris RER line C. It is also served by Épinay-Villetaneuse station on the Transilien Paris – Nord suburban rail line.