n this thesis, I take up the vita, the life's work and the impingement of the Viennese architect Edith Lassmann (1920-2007). In doing so, I would like to focus on the question of how Lassmann, as one of the pioneers of her time, helped shape the architectural scene and interpreted the current trends and requirements of reconstruction architecture, after the second world war, in her work. As a preparation for my thesis, I started to work on her bequest at the Architekturzentrum Wien and thus learned first-hand how complex, varied and innovative Lassmanns achievements as an architect are. Within the first part of my paper, I deal with Edith Lassmann's life and professional career, focusing on her work as an architect in a male dominated professional environment. I would like to comment on her design and her planning activities during the construction of the Kaprun power-plant (1955) as well as her dissertation, her publications and her contribution to architectural history. In the second part, I will, sorted by construction tasks, take a look at a selection of Lassmanns projects, both realized and non-realized, and give a general overview of her extensive and wide-ranging work.