History, plans and projects for public space regeneration: the role of the Walls

The research 'Italy and China. Historic infrastructure and ecological networks for an integrated urban regeneration strategy', by the PDTA of Sapienza University of Rome, has examined the relevance of historical-environmental components as reference strategies to trigger urban regeneration interventions; it has dealt with the issues of marginality, integration between different functions and uses of public space – aiming at generating unexpected and inter-scalar synergies (Mariano 2023). Public spaces marked by the presence of linear historical permanences (walls, aqueducts) are characterised by a static/dynamic dual aspect of marginality and centrality: (a) ‘marginality’ because although maintaining an intrinsic, static, value of memory, they often suffer from neglect and degradation; (b) ‘centrality’ because the dynamic dimension movem