The will to preserve and enhance cultural heritage imposes reflections on databases as containers of information for the accessibility of dispersed heritage. The aim of the research is to validate methodological approaches in order to create 3D models and information systems. These tools improve accessibility to the artifact, according to different interconnection channels, in order to overcome the physical limit imposed by location. Tangible and intangible heritage take the form of a metadata network throughout a critical analysis and elaboration of data. These files create a complex database containing 3D models rich in information that describe cultural systems. The digital survey is the starting point for the development of languages, signs and symbols. It transfers complex objects into virtual systems, developing a multidimensional dialogue capable of integrating actions and meanings. The interactivity of complex databases facilitates the accessibility and disclosure of data to a wide audience. It requires the establishment of representation systems based on the development of virtual environments.

The present paper illustrates the documentation activities developed since 2013 on Upper Kama territories, preliminary to an extensive and joint research action within the European project “PROMETHEUS” (2019–2021), which aims to produce digitized databases and models for the management of the main religious monuments present on this Russian area, nowadays endangered by risk of conservation. The project is funded by the EU program Horizon 2020 – R&I – RISE – Research & Innovation Staff Exchange Marie Skłodowska-Curie, and it is aimed at the definition of inter-sectoral collaboration protocols for the development and promotion of a new methodology for the development of reliable 3D databases and models of monumental complexes in Upper Kama region. The project, that involves the collaboration between three Universities (University of Pavia, Italy, Polytechnic University of Valencia, Spain, Perm National Research Polytechnic University, Russia) and two enterprises (EBIME, Spain, SISMA, Italy), aims to promote actions to develop interdisciplinary activities for the documentation, management and production of collaborative H-BIM models, for the start-up of monitoring and development activities on this specific Cultural Heritage. Researches and initiatives conducted in the previous years on Upper Kama territory highlight potentialities and opportunities of digital survey to define a basis of knowledge that is both scientific and technical, for future interventions on endangered architectural heritage, where academies, companies and administrations promote actions to develop interdisciplinary documentation activities through collaborative management H-BIM models and an intervention protocol on Cultural Heritage.

The present study concerns the digital documentation of the city wall of Verona. The "Verona Città Murata" project began in 2015 thanks to the research agreement between the Municipality of Verona (UNESCO office) and the Department of Civil Engineering and Architecture of the University of Pavia. The project stems from the request to develop tools to document the site's conservation to initiate timely restoration, management, and maintenance studies. Measures for protecting, conserving, and enhancing a comprehensive and impressive cultural and natural heritage, such as the Magistral Walls and the Veronese Park, are complex and multifaceted. The multi-disciplinary aspect and the use of flexible tools to manage the information and analyses obtained during the study phase are fundamental. The research aims to optimize the fortified system's acquisition process by validating integrated survey methods and assessing point cloud data's potential, limitations, and planimetric and elevation accuracy (TLS, MLS, UAVs). On the one hand, the research products are aimed to structure a methodology of valuable representation for the documentation and diagnostic and conservative analysis of the artifact; on the other hand, they will become a helpful tool for the narrative description of Verona's fortifications to disseminate and valorize the fabric of military technology.