ingenhoven architects was founded in 1985 by Christoph Ingenhoven and is one of the international pioneers of sustainable, ecological architecture. The office develops and realizes projects of all sizes and typologies in nearly every region of the world and in accordance with the highest green building standards, such as LEED, Green Star, BREEAM, DGNB, and CASBEE. In 1997, ingenhoven architects received international recognition for the RWE Tower in Essen, one of the world’s first ecological high – rise buildings. Since 1997, the office has been planning Stuttgart’s underground main railway station. Several award-winning high-rise projects have been built in Singapore, Japan, and Australia. The headquarters of ingenhoven architects is located in Düsseldorf’s Media Harbour, with branches in St. Moritz, Sydney, and Singapore.