The primary façade material is COR-TEN steel. The façades at the entrances are made of burnt clay brick and glass. The surface material used for the seven-metre recesses on the top floors and on the main entrance side is dark blue profiled sheet.
The exceptionally large floor heights – with some floors up to 10 metres in height – imposed special requirements on the design of the premises. The long spans also called for unusually robust steel lattices measuring up to 3.5 metres in height. Thanks to the lightness of the steel frame, the tall lattices lend the premises a celebratory openness.