1920- 1946- 1952- 1953- 20thcentury 21stcentury adolf architects architecture artists berlin bretterbauer buildingsberlinerkraft-undlicht(bewag)-aktiengesellschaft buildingsvattenfalleuropeag designandconstruction electricsubstations förg germany gilbert günther history industrialbuildings josephsohn krischanitz max märkli officebuildings peter sustainablebuildings switzerland