Essener Bogen HamburgArchitectIng.-Büro Albert, HamburgFacadeSTP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C STP-2DF-10C