The book is divided in two parts: the first part deals with theoretical and methodological issues and the second one describes the results of applied research on a historical monumental building which, because of its size and complexity of the problems involved, may be considered a paradigmatic example. The theoretical and methodological approach is discussed from different points of view. In chapter 2, Stefano F. Musso enucleates, in a contemporary framework, the fundamental questions inherent the discipline of architectural restoration, opening to the most pressing problems related to the theme of environmental sustainability and enhancement. The authors of chapter 3 , which in most experiences have already been working in multi discipli...