The project mobile hospitality (Mobile Gastfreundschaft) pays attention to an important aspect of our design work – the responsibility and the self-initiative in public space. The city plays as a space a difficult role. On the one hand it does not belong to anyone, on the other hand it belongs to all, but it is merely used by us actively, as it was in former times. It has decreased to the background of our everyday activities. Responsibility for the outdoor space, for most of the residents stops at their garden fence. The project mobile hospitality starts just here.