This book will be the first significant publication on the oft cited and influential Danish architect Hans Christian Hansen. Hansen was a municipal architect with Copenhagen from 1934 - 1974. From a working-class background and unlucky in competitions, Hansen never established his own practice, but this did not limit his ability as an architect. He had an ability to conjure beauty from the most unlikely of projects, creating remarkable civic structures from modest briefs: electricity transformers, water treatment plants, power stations and schools.Frequently using woven motifs, he worked with cheap and robust materials to make an articulate and nuanced architecture of walls, subdued form and laconic expression. Over time, he developed his own clear language and sensibility, based on off-the-shelf materials which became more and more radical with time. His built work has become an open secret in architectural culture in the years since his retirement - proving influential on celebrated architects including Herzog de Meuron, Caruso St John and many more. The book includes essays by Prof Kersten Geers, Prof Jonathan Sergison, Prof Anne Beim and Prof Marie Frier Havejsel, and includes detailed architectural drawings by the students of Atelier Clancy Moore 2025 at the Accademia di Architettura Mendrisio, Switzerland.