Once the office of John W. Campbell, a multimillionaire tycoon in the ’20s. Decked out with priceless items like a Persian rug, piano, and organ, the space was the site of receptions and concerts for him and his friends after a hard day of work. Though hidden behind a private entrance, the bar is right in the middle of the hustle and bustle of New York’s famous Grand Central Station. Ample wood and marble prove the place is old school. Amidst Beaux-Arts opulence so rare and magical, this is the perfect background for a stiff martini.