The main claim of the Art Nouveau movement, of which Hector Guimard was one of the leaders in France, is the unity of architecture, furniture and decoration. Decorative objects or furniture must not be isolated in a room, but fully integrated into the style of the entire house. Guimard, famous for designing the entrances to the Paris metro, applied this principle to one of his major constructions, Castel Béranger in the 16th arrondissement in Paris, for which he designed all the furniture…