Franconville is a commune in the Val-d'Oise department in Île-de-France in northern France. It is a northwestern suburb of Paris, located 17.1 km. from the center of Paris.
Wikipedia https://en.wikipedia.org/wiki/Franconville,_Val-d'Oise
Coordinates 48°59'9.69" N 2°13'49.259" E
