Seine-et-Oise

Seine-et-Oise was a département of France encompassing the western, northern, and southern parts of the metropolitan area of Paris. Its préfecture (capital) was Versailles and its official number was 78. Seine-et-Oise was abolished in 1968.

Grande couronne

The three départements of Yvelines, Essonne, and Val-d'Oise, plus the Seine-et-Marne département, are altogether known in France as the grande couronne (i.e. "large ring", as opposed to the "small ring" of the suburbs closer to Paris).

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