In the following article, there are introduced some modern, environmental friendly technologies, that are being adapted in new-build and modernized office buildings in Germany. Various solutions are presented: referring to structure and construction, such as double and triple, ventilated curtain walls, cooling slabs and advanced installation systems converting sun, wind and water energy into electric current and heating power. Beside, functional schemes of several office buildings are being analyzed. Author studies the effect of these solutions on work environment and ergonomics. Moreover, there are discussed architectural design issues in the context of multi-criteria evaluation of buildings. (BREEAM, LEED, DGNB). The main part of the article, that refers to German office buildings is completed with descriptions of buildings located in Vienna.