Le Bilboquet

Behind a strict dress-to-impress code—which turns away athletic wear and beach attire—the room features art, crisp linens, and windows that open to the street in warm weather. The menu extends to dishes like tuna tartare, truffle ravioli, and chocolate mousse. While it gets crowded and prices run high even for the neighborhood, window tables offer a front-row seat to the passing Upper East Side crowd.