Get high in Chicago's third-tallest skyscraper. In many ways the view here surpasses the one at Willis Tower. The 94th-floor observatory has informative displays and the 'skywalk' (a screened-in porch that lets you feel the wind). Those not needing such frivolities can shoot straight up to the 96th-floor Signature Lounge, where the view is free if you buy a drink ($6 to $16).