In 1985, Christoph Ingenhoven founded ingenhoven architects, a practice that is one of the pioneers of sustainable architecture. Using the term supergreen®, the practice pursues a comprehensive sustainability concept. It develops and builds projects of any size and typology in almost all parts of the world—all in accordance with the highest green building standards, such as those of LEED, Green Star (Australia), BREEAM (GB), DGNB (Germany), and CASBEE (Japan). In 1997, the practice achieved international recognition with the RWE tower in Essen, one of the world’s first ecological high-rise buildings. Since the same year, ingenhoven architects have been designing Stuttgart’s new main railway station. A number of award-winning highrise building projects were completed in Singapore, Japan and Australia. At its head office at Düsseldorf’s port, the practice employs about 100 architects, draftsmen, and model builders of 20 nationalities. In addition, the firm is represented internationally at St. Moritz, Sydney and Singapore.