La Mercerie Pâtisserie is located within Marcel 945 Madison Avenue, the restaurant in the Breuer Building on Madison Avenue, owned and operated by the design firm Roman and Williams in partnership with Sotheby’s. A pastry destination unlike any other in New York, La Mercerie Pâtisserie bridges the everyday pleasures of small-town French boulangeries with the elegance and ambition of Parisian pâtisseries.