The monograph "Fritz Haller. Architect and Researcher" offers a comprehensive insight into the life and work of one of the most significant architects of the 20th century. Fritz Haller, known for his innovative approaches to industrial construction, has profoundly influenced architecture with his projects and theories. The publication highlights Haller's diverse works, ranging from school buildings to residential and commercial properties, as well as modular steel construction systems. Particularly noteworthy is the furniture construction system 'USM Haller', which was developed in collaboration with the company USM U. Schärer Söhne and has gained international recognition. The monograph includes contributions from various experts and a catalog featuring 37 selected projects, along with a complete bibliography that documents Haller's interdisciplinary perspective on architecture, art, technology, and science.