R128 House is an experimental house designed by Werner Sobek, a professor of engineering and architecture at the University of Stuttgart. The glass-and-steel R128 House is located on a steeply sloped site with panoramic views of Stuttgart, Germany. Although this house seems sterile and completely transparent, it is a home where comfort and privacy issues for the inhabitants have been met. It is a completely recyclable, emission-free, energy self-sufficient building. The design resulted from his desire to have an all-glass house with unencumbered views of the surrounding city and countryside that would also employ contemporary engineering concepts for sustainable buildings.