The internationally renowned architecture firm Herzog & de Meuron has experienced an unprecedented rise since it was founded in 1978. How do these architects manage to repeatedly break new ground and use supposedly classic materials in an unfamiliar way in the design? How does one come up with such unique ideas and successfully implement such design ideas in practice? We researched in the Detail archive: reports, interviews, online and technical articles as well as abundant project documentation. This expanded new edition of the monograph about the firm Herzog & de Meuron takes a look behind the scenes, describes processes and shows one thing above all: many construction details.