Architect: Dipl.-Ing. Architekt Walter Brune, Düsseldorf
Construction: Mullion/transom façades (aluminium) both externally and internally, fire-resistant façades/elements (aluminium)
Metal construction cost: ca. € 1,800,000 share of the cost
Special features: Remained open for business during conversion, horizontal sliding wall system and fully-glazed door elements, external aluminium elements clad in stainless steel