After an elevator whisks you to the top of the John Hancock Building, you have a couple of choices. You might linger over cocktails in the lounge or proceed to a bright and airy dining room with tables draped in white linen tablecloths. It might sound formal, but the atmosphere is casual and unstuffy. The changing menu features an excellent variety of creatively presented fresh seafood, duck, lamb, fine steaks, salads and pork chops. A brunch menu is offered on weekends.