The act of building and its material reality play a defining role in the work of Swiss architect Roger Boltshauser. His architectural language thus develops in the context of the examination of materials and their intrinsic constructive and structural possibilities. Edited by architect and lecturer Martin Tschanz, this monograph examines how Boltshauser’s 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. Contrary to the abstractness of modernism and neo-modernism and the arbitrariness of free forms, his is a unique, contemporary expression.