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111 South Wacker Drive in Chicago receives second LEED Gold certification
The spectacular 52-storey landmark building 111 South Wacker Drive in downtown Chicago is the world’s first-ever speculatively built high-rise office building to be certified LEED-CS (Core and Shell) Gold for its sustainable construction. 111 South Wacker has now also become one of the first office buildings to receive LEED-EB (Existing…