Georeferencing as availability of space - temporal data

The first results of the research in course are presented here, concerning the specification guide on georeferencing cultural heritage which is part of the Regione Lombardia (Lombardy Region) Risk Map related to the advanced concept of georeference through the use of historical maps and historical 3Dviews in GIS approach applied to the specific case of historical sites. The georeferencing, as collection of space-time data related to differentiated levels, and the correlation between 2D / 3D historical and modern cartographies can contribute to improve the knowledge of site history, read on the state of art of the manufacts through the material traces of the transformations occured during the past centuries. It could contribute to guide the contemporary transformation, to support a sustainable development and to organized maintenance policy, in compliance to the policy for an active involvement of civil society in the protection of cultural heritage and for the transparent sharing of geoinformation within public institutions. A collection and organic management of the knowledge acquired represents a fundamental requirement for a proper policy towards an integrated conservation of the cultural heritage as subject of constant alteration; GIS, considered as an open and updated domain, can be used as a support in the processes of planning the protection and development of historical sites. One open question here is whether the GIS notion of “3D Point of View” can be combined with historic “3D View Map” in order to enable the reading and safeguarding the state of the art of complex heritage manufacts system. In other words how the “Topographic Dbases” should be improved in order to support 3D views simulating low to high human vision.