The city’s best-loved architectural facade, the Arctic Club Building, hides one of its most beautiful lounges: right in the hotel lobby, in plain sight. Taking a seat in its clubby art deco environs makes you feel like a character in a Fitzgerald novel. Cocktails are mostly classic but will suddenly veer fabulous, like the Marie Antoinette: gin, St-Germain, bubbles, and lemon, garnished with a generous hunk of pound cake.