The romantic Bar Seine inside the luxe Plaza Athénée provides the perfect spot for a night out on the Upper East Side. The amber-lit lounge is chic and intimate; the decor an inspired mix of North African–, European- and Asian-influenced art and furnishings, with velvet curtains, red lacquered walls, animal-print fabrics and leather floors. The full menu includes the signature cocktail, known as the Crystal Cosmopolitan, and the venue also offers a menu of upscale bar snacks like crab cakes and truffle popcorn, as well as high tea service every afternoon.