Achères is a commune in the Yvelines department in north-central France. It is located 23.7 km from the centre of Paris. The commune of Achèr…Achères is a commune in the Yvelines department in north-central France. It is located 23.7 km from the centre of Paris. The commune of Achères lies on the south bank of the Seine in a loop of the river, on the edge of the Forest of Saint-Germain-en-Laye. It borders Saint-Germain-en-Laye and Poissy on the south, Andrésy and Carrières-sous-Poissy on the west, Conflans-Sainte-Honorine and Herblay on the north, and Maisons-Laffitte and La Frette-sur-Seine on the east.