John Hancock Center (Towers to Scale)
One of the main attractions of this 100-story building is its exterior cross bracing. Over and above its esthetic value, this unique design adds structural stability and helped cut construction costs by 50%. The John Hancock Center gradually rises from 3716 meters squared (40,000 square feet) at the base to 1,672 meters squared (18,000 square feet) at the summit. Offices and stores occupy the lower floors. The top 49 floors are for residential units and apartments. An observatory on the 94th floor provides tourists with a breathtaking view of the city and Lake Michigan.
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