Urban regeneration is currently the most important issue in a period of building saturation and a severe public sector crisis. Cities no longer need to grow and the issue of critically rethinking the ‘already built’ is acquiring decisive ethical and cultural value. It is therefore no longer a question of accumulation, expansion and consumption, but of rationalisation and moderation, saving, repair and integration. The regeneration of towns and cities and space already in use forms part of the now inescapable change of public perspective and is becoming an opportunity to reconsider our environment and the quality of spaces. What is needed in this context, however, is understanding and awareness of how much and how it is possible to manipulate and modify architectures that are ‘not sustainable’ from an energy viewpoint, but are significant in the way they represent the architectural culture and traditions of the past.
Keywords: Modification; aesthetic sustainability; repair