Diogene, a “cabin” designed by Renzo Piano and RPBW for Vitra, is not an emergency accommodation, but a voluntary place of retreat. It is supposed to function in various climate conditions, independent of the existing infrastructure, i.e. as a self-sufficient system. The required water is collected by the house itself, cleaned and reused. The house supplies its own power and the necessary platform is minimised. We live in an age in which the demand for sustainability forces us to minimise our ecological footprint.