This is the new name for the John Hancock Center Observatory. In many ways the view here surpasses the one at Willis Tower. The 94th-floor lookout has informative displays and the TILT feature (floor-to-ceiling windows that you stand in as they tip out over the ground; it costs $7 extra and is less exciting than it sounds). Not interested in such frivolities? Shoot straight up to the 96th-floor Signature Lounge, where the view is free if you buy a drink ($8 to $16).