The Anglo-German practice Sauerbruch Hutton has released images of its almost completed 38,000m2 extension for the KfW Banking headquarters in Cologne
When it is completed the £62m, 15-storey building will be one of the most energy-efficient high-rise offices in the world.
 






 
 
 



 







 
                 
                 
                 
                 
                
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