On this building, the light tubes are used for three different purposes. Firstly, they are part of a vertical cantilever to the Adlerstrasse / corner Zähringerstrasse. This cantilever is made of colored glass with backlighting; the tubes are attached to the glass as lettering.
Furthermore, blue and red tubes are located in the roof above the entrance area and thus serve as lighting.
Als weiteres Element gibt es noch ein umlaufendes Band an der Oberkante des Erdgeschosses mit blauen Röhren.