The act of building and its material reality play a defining role in the work of the Swiss architect. Boltshauser does not, however, base his work primarily on historical references, nor is he interested in distilling out any structural principles and expressing them in their purest possible form. more His architecture is neither an implementation of a pictorial idea nor a display of a certain principle. Rather, it is integrative and open to complexity, particularly that of the act of building itself. Concerns such as sustainability are just as important as compositional and spatial design aspects. The climate factor plays a role at all levels of scale and in all planning phases, influencing urban planning concepts as well as floor plans and façades, the choice of materials and building services. It is both a formative and simultaneously a formable aspect of the design process, resulting in a unique, contemporary expression. At the same time, the monograph presents Boltshauser`s free artistic work for the first time. Impressed by Joseph Beuys, Anselm Kiefer, Arnulf Rainer, but also by Swiss representatives of Neo-Expressionism, and inspired by the Zurich youth riots in the 1980s, the architect began an artistic oeuvre parallel to his architecture studies, and exhibited it. He has remained true to both disciplines. His free art work is not to explain without his architectural work as, conversely, his architectural projects hardly without his artistic work. In constant parallel processes, art, design and construction combine to create his work.