Ruins appear to us as a hole in reality (in what we believe the real to be), making us observe it in section, slicing and collapsing the distinction between inside and outside. And precisely as a "hole of the real", ruins "break the roof of the house" of architecture and bring together the two split ends – which in fact are not split, but which we want to appear as such –: the architectural and the environmental; climate and microclimate; but also ancient and new; finally, the so-called "natural" and the so-called "cultural". In this sense, ruins are the sensitive epiphenomenon of a collapse – a collapse that reshuffles everything. Ruins are a dress (sometimes rumpled, but not necessarily) that we no longer want to use, but we don’t have the courage to throw away, leaving it there.