Re-Greening approach: regenerate gardens and courtyards as a green infrastructure in the historical city core. The case of Florence

The paper is placed within a theoretical reflection on how we can decline the concept of green city in European urban culture and, more specifically, historical areas of the city. The case of Florence, hired as an experimental model, is emblematic for the symbolic load that the city is in European history and because it offers real opportunity to check if and how you can adopt a ' green ' more compact urban tissues. Re-Greening approach has as its object the regeneration – environmental, social, architectural, functional – internal areas of urban compact city blocks and their systematisation as networks of "transversal" public spaces and green infrastructure. The approach is experimented with a project, Re-GreeNet, applied in two areas of the historical centre of Florence. The methodology described in the projectcan be extended, by the courts and gardens more compact tissue, in a variety of situations. The assumption is to make possible the systematisation of the bricolage of public and private spaces making the nodal points of a green infrastructure. A project of this nature should be supported by a national policy to insert into a specific National Urban Agenda.