The so-called “Tulpenhaus” (Tulip House) is an ecological wooden house with healthy building materials – built in a modern innovative aesthetic form. The four-storey apartment building in pure solid wood construction was presented to an international audience at the world exhibition in China (Expo 2010). The economic implementation of a sophisticated design can be achieved by the revival of an ancient construction technique of the Tulip House.
The highlight of this house is its unusual roof construction, resembling a flowering tulip. Up to the ridge of the roof appear nested levels of roof-like individual petals curved into the wind. This design causes that the building nestles in the landscape of the small-scale Kaiserstuhl vineyard terraces. The construction may seem complex for the viewer but it is based on simple ancient craft techniques.