A dialogue between architecture and technology. Methodological processes for the knowledge and preservation of buildings of value in the eastern part of Sicily

The figurative unity of architecture consists of the complete and complex image deriving from the synergistic relationship between knowledge and perception. Even when the physicality is broken up, it can survive through its representation based on its remains, thanks to a preservation and rebuilding project. For this purpose this study focuses its attention on the peculiarities of the investigation work made through digital instruments in those cases in which, either in small or large -scale, the remaining architectonical elements are just ruins. The real matter is whether an extremely detailed observation can be useful or not in such an area (Eastern Sicily) where the details are quite often unreadable. Another problem is the relationship between the survey and the perceptive image of a real drawing made, either during the survey work, or in the past. Taking into account the semantic value of the ruins, the connection between the potentiality of the survey made by modern digital instruments and the contextualized drawing of what already exists becomes of fundamental importance, as it establishes a dialectic relationship between past and present, substance and its representation.