Jean-Charles de Castelbajac Concept Store carries the quirkily cerebral yet memorably elegant designs of the designer's own clothing collection, along with furniture, candles, blankets, and luggage. There is also jewelry by different young designers each season; cool books and magazines like Dutch, Crash, and Very; and Keith Haring-designed dominoes. Métro: St-Sulpice. Other location: 31 pl. du Marché St-Honoré, 1, Louvre/Tuileries, Paris, France, PHONE:01-42-60-41-55; Métro: Tuileries.