The Sun Ship is a large integrated office/retail building designed by architect Rolf Disch and located in Freiburg directly next to the Solar Settlement by the same designer. It uses 60,000 sq. ft. for retail, commercial and residential space. As a whole this building produces more energy than it consumes per year and utilizes the most up-to-date building technology. Some aspects that make this building particular are its vacuum insulated walls, ventilation with 95% heat recovery, triple paned windows and its energy façade.