Fritz Haller (1924-2013) is one of the influential figures of the 20th century in the field of industrial construction. In the early 1960s, he became widely known beyond the borders of Switzerland as a representative of the so-called School of Solothurn, alongside architects Alfons Barth, Franz Füeg, Max Schlup, and Hans Zaugg, who also hailed from the Solothurn region. Haller's work encompasses a remarkable range of different buildings and projects, including school buildings, residential and commercial properties, industrial halls, modular steel construction systems, and digital planning tools. The furniture construction system "USM Haller," developed in collaboration with the company USM U. Schärer Söhne in Münsingen, has become a globally recognized brand. Fritz Haller was committed not only practically but also theoretically, whether at Konrad Wachsmann's Institute for Building Form.