Architectonical Heritage presents a wide quantity and heterogeneity of data, which it is necessary
to manage in a suitable way in order to obtain an efficient information. The exigencies and the
requirements always stated (unique catalogue methods, sharing and communication of the
information for the preservation and the valorisation) are further confirmed by the information and
web technologies: logics and informatics tools developed by these sectors can be efficiently
employed for representation and metric documentation goals. Spatial information, following
specific standards, must be managed in a suitable way in order not to lose the characteristic
complexity of Architectonical Heritage and must be integrated with the thematic information which
unavoidably enrich the representation. Existing standards are used, integrated, in order to obtain a
data structuring which can respond to the exigencies of interoperability stated by the web and by
the international organisations. Theoretical solutions are here tested on a case study
