The territory and city as a common good

The topic of common goods has become part of current debates in legal, philosophical, behavioral, economic field. Not the same instead it is said regarding the problem of common goods refers to the city, architecture, and urban planning in general. Urban spaces, monumental contexts, landscape architectures are in fact taken into consideration only when they worth for the cataloging of the Ministry of Culture or of the regions to which they refer. The intent of this paper is to highlight the necessary dialectic between contexts objectively collective good or common good and other contexts perhaps less 'noble', but just as significant as expression of people and of their historical and of socio-economic, actualized habitat. It is recognized that the problem of commons offers an important key to understanding of participatory democracy, without which there would be no interaction between the object static and dynamic interpretation, typical of urban living. In this respect, we will focus (doing as a typological example the commons of Cagliari) on the different interpretation contexts in order to understand whether the assessment can be justified as a common good.