Office building GAP 15, Duesseldorf, NRW, Germany

15 2005 dusseldorf eu gap germany nrw north rhine rhine westphalia rhineland westphalia administration architects architecture below block blue building buildings business capital center commerce company completion construction economic economy enterprise exterior form front german glass glazed group headquarter high high rise high riser management modern mulltistory multi multi storey multi story multistorey office outdoor paned perspective rise riser rounded sky state storey story tower trail trust urban