Île-de-France
The Île de France is known as the Paris Region or Région Parisienne and consists of the City itself plus the départements of Essonne, Hauts-de-Seine, Seine-Saint-Denis, Seine-et-Marne, Val-de-Marne, Val-d’Oise and Yvelines.
Although technically Monet’s Garden at Giverny is actually in Normandie it is so close to the Île-de-France that I’ve linked to it here.