Subject of this thesis is the study of the methods of construction and lightweight systems like timber, steel and glass, and development of alternative building concepts for vertically dense types (o ce buildings) in terms of their sustainable use, design, construction, building physics, re protection and static aspects. The power of nature (light, Plant) represents an essential factor. In the chapter „problem area“, the theme is justi ed: material and energy ows are scrutinized, the usefulness of densi cation and the need for the use of lightweight structural systems explained and the bene ts of solar energy illustrated. The second chapter - entitled „Power of Nature“ - handled the bene ts of plants, their use and demand on light and substrate. The third chapter is devoted to the technical aspects of the compacted, stacked construction. It covers the points: structural systems, alternative timber systems, steel structures, glass facade systems, membrane facades and re prevention. The technical aspects are covered with selected examples from the point of „Green Building“ and biological architecture. The projects are a type of architecture that represents the natural ecological construction. In the fourth chapter, „o ce building“, building typology as well as room concepts of o ce buildings - traditional and alternative o ce concepts - are discussed and explained. In the fth chapter, „BIM“ building information modeling, the topic in general as well as special - planning phase conception and design - is explained and given an example. Finally, concept studies are presented and two selected prototypes sixand twentystorey-building are worked out in detail.