In the northwest wing of the Louvre's Pavillon de Marsan, this museum boasts furnishings, fabrics, wallpaper, and objets d'art from the Middle Ages to the present -- but we recommend it only if you have an abiding interest in the subject. Notable on the first floor are the 1920s Art Deco boudoir, bath, and bedroom of couturier Jeanne Lanvin by Rateau. Decorative art from the Middle Ages to the Renaissance is on the second floor; collections from the 17th, 18th, and 19th centuries occupy the third and fourth floors. The fifth has centers on wallpaper and drawings and documentary centers detailing fashion, textiles, toys, crafts, and glass trends. The newest addition is a Musée de la Publicité (Museum of Advertising), with posters from the 18th century, and film, TV, and radio commercials from the 1930s to today. Architect Jean Nouvel designed a cutting-edge interior that also displays avant-garde video techniques.