You can be 10 feet from The Campbell Apartment, a bar tucked into the corner of New York's Grand Central Station, and not have any idea it's there. The office of a member of the New York Central Railroad's Board Of Directors in the 1920s (and later a storage closet and a jail), the room is intimate in spite of its 25-foot ceilings and the enormous leaded-glass window that faces Vanderbilt Avenue.