The Batterie de Bouviers is located in the commune of Guyancourt, Yvelines, France. It is a former fortification built beginning in 1879 and occupied by the army until 1932. From 1933 it was leased by the Hispano Suiza company as a factory, surrounded by other industrial structures. The site was abandoned by Hispano Suiza in 1990, and was sold by the Ministry of Defense in 1999. In 2006 the battery became the "Cafe Musiques", surrounded by office buildings and a music school.