In this book, Bart Decroos and Raamwerk (architects Gijs De Cock and Freek Dendooven) unfold the design process of Lichtervelde Youth Centre, through a set of unpublished work documents including sketches, scale models, plans, and pictures. Through four anecdotes, they explore how the reality of the construction site allowed them to continue the design process during the realisation of the building itself. Beyond the singularity of this remarkable project, the book demonstrates the critical relevance of construction in architecture theory and discourses. Three additional contributions shed lateral light on the level of research pedagogics and theory: the external outlook and the inner knowledge complement each other. The book results from the collaboration between KU Leuven, ULB and U Liège within Architecture In Practice, a multi university research group exploring the multiple ways in which individuals can engage their professional architecture practice in academic research and reciprocally. The book has been double blind peer reviewed.