A specialist in Art Nouveau in the city that spawned the style, Yves Macaux’s showrooms offer the finest in objets d’art from across Europe. Famed as a discerning dealer, his stock is always changing but the quality remains impeccable, from pairs of hanging lamps by Koloman Moser to silver trays by master craftsman Henry van de Velde. Even if you can’t afford to buy here, go visit the gallery for a peerless introduction to the delights of Art Nouveau.