Abstract. The documentation of historical architectural heritage in urban contexts involves the consideration of planning adaptations of settlements and landscape, related to the identification of formal and semantic qualities. In particular, the identification of cultural significance of Heritage building units can find correspondence in geometrical features that are documented within the urban asset. In this way, urban monitoring, in an increasingly automated way, can support the identification and characterization of semantic elements also regarding Heritage objects, observing the invariance and conservation of formal constants in urban dynamic assets.Considering the experimental case study of Solikamsk historical center, belonging to Upper Kama route (Russia), a multi-instrumental strategy of spatial survey is applied, evaluating data coverages and resolutions. This analysis defines a preliminary framework to develop further processes of 3D triangulation and reality-based meshing. The morpho-metric detail of final models constitutes the basis for the computing test of feature-based procedures, including regions recognition and mesh segmentation, which can be calibrated for shape qualities and scales, reaching a preliminary modeling classification of Heritage and urban building units.

Abstract. The research presented in the article focuses on the development of methodological protocols - from survey to digital reconstruction - for the enhancement and protection of built heritage. Through the realisation of virtual reality-based digital models, it is possible to narrate the evolution and transformation of those places that constitute our historical memory. The European Project H2020 Prometheus, focused on the documentation of the Gdańsk fortresses Route, allowed applying these strategies to the Port Battery case study, presented in this paper. The coastal battery, built in the 19th century, is a brick ruin located in the restricted port area of Gdańsk, witness to several historical processes of transformation. To be able to represent the evolution of the building through history, the operational method regarded the digital acquisition of the building to obtain a detailed model representing the state of the battery. Then the archive research and the available historical maps allowed not only to make a comparison between the previous stages of construction and the actual situation but also to digitally reconstruct what has been destroyed. In this way, through Virtual Reality via Head Mounted Display it is possible to obtain an immersive, but accurate, experience of the digital reconstruction being able to re-live the history of a place.