Timber construction is not a private matter, but rather the order of the day. The task of the timber associations from Germany, Austria, and Switzerland was to address questions of timber construction in public space. In the large social picture, it is an "election campaign" for wood as a material and ultimately for more climate protection. With simple pictorial symbols in over forty steps, the outdoor wood sculpture conveys the transformation from fir to house. Walking through the illuminated passageway, it becomes a speaker and ambassador for the ecological advantages of timber construction.