This work presents a compilation of materials with which seventeen artists reflect on the gap between architecture as idea, architecture on paper, and its actual use - in other words, the "afterwards" of construction. The project distinguishes four possible typologies of the afterwards: back, interior, around and demolition. These typologies of the afterwards would in this way come to compose a kind of heterotopia of architecture. It is illustrated with works by Vangelis Vlahos,Terence Gower, Pia Ronicke, Xavier Arenos, Gregor Graf, Mounir Fatmi, Xavier Monteys, Heidrun Holzfeind, Tim Etchells, Laurent Malone/ Dennis Adams, Didier Bay, Jordi Colomer, Alexander Apostol, Chris Mottalini, Lara Almarcegui, Jan Tichy and Clay Ketter.