Set in the city centre on the shores of Lake Lucerne, the various volumes of this complex are united by a striking roof structure. The roof extends out freely over the upper floors on the lake side with a cantilevered section 45 metres long on the diagonal. The top of the roof is structured by copper-clad steel girders. The broad roof projection visually reduces the size of the forecourt and serves to integrate this space into the building. Views of the lake can be enjoyed from the various terraced areas laid out at different levels beneath the cantilevered structure. The surface of the water is complemented by the smooth metal soffit of the roof, in which the surroundings are reflected.