composite window with integrated sun protection. For inspection and cleaning purposes, this window and the glass panes can be accessed via an internal pivoting sash that is unlocked with a plug-in handle. While [...] and does not form any toxic gases either. Falling window half shells due to burning insulators cannot occur in this high-rise building. In the steel window construction, the frame corners are not bevelled [...] continues. Thus, a thermal insulation composite system had to be applied to the facade, consisting of window parapets made of pumice stone and a visible concrete construction. Another challenge was the faithful