A view of granite: wall and floor cladding in the Museumsinsel underground station
The subway station Museumsinsel is currently undergoing a visual change: by attaching the wall and floor panelling, the grey concrete look gives way to the noble appearance of the granite plates, which will soon adorn all the walls and floors in the station.
The granite used for this comes from the Fichtelgebirge, or to be even more precise: the mountain Kösseine near the small town of Wunsiedel in Bavaria. There, the stone is quarried in the quarry in the form of large blocks weighing over 20 tons and from there it is taken to the processing plants of the Hofmann Naturstein company in Werbach-Gamburg in the Tauber valley (Baden-Wuerttemberg), where it is processed into wall and floor plates. There, too, the necessary boreholes are already being drilled and the necessary brackets fitted. The plates are then mounted by hand in the station, for example to the substructure of the rear track wall. A difficult task: some of the panels weigh over 100 kilograms.
In total, around 21,000 such panels will be installed in the end, covering an area of 6,600 square meters of walls, floor and stairs. At present, almost a third of this has already been completed. 1,700 square metres of wall surface have already been installed, which mainly includes the rear track walls. In addition, 500 square metres of the floor slabs have already been laid. This means that the platform area, which is important for the line commissioning, is already almost completely lined with plates.