Val-d'Oise is a French department, created in 1968 after the split of the Seine-et-Oise department and located in the Île-de-France region. It gets its name from the Oise River, a major tributary of the Seine, which crosses the region after having started in Belgium and flowed through north-eastern France.
Charles de Gaulle Airport, France's main international airport is partially located in Roissy-en-France, a commune of Val d'Oise.
Wikipedia https://en.wikipedia.org/wiki/Val-d'Oise
Coordinates 49°4'57.905" N 2°7'51.093" E
