The views of Lake Heimbach and the Meuchelberg, a nature reserve on the opposite side of the lake, the oak forest and the steep northern slope are the first impressions to take into account for the “weekend house”. The latter is supposed to be the special, almost insoluble challenge. It is reasonable to assume that the house and its future occupants will benefit little from the sun. On closer inspection, however, it can be seen that especially in winter and the transition periods, the sun finds its way across the mountain through the light trees to the property due to the lack of leaves on the trees. This is an essential design idea and ultimately the form of the house. If the external observer believes that the house is positioned the wrong way round, since the house with the high, transparent facade does not face the lake, one can experience the effect of how the house captures the sunlight shining over the mountain, even in summer months and even more so in winter.