Towards immersive urban digital twins

Urban digital twins are virtual representations ofphysical systems,subsystems,and processes of a city.The construction of a three-dimensional geometric model of the city provides the basis for the development of an urban digital twin.On top of the 3D model, heterogeneous data describing or simulating one or more systems and subsystems can be embedded and visualized. In this context, w efocus on the possibility to exploit Virtual Reality (VR) technologies to enhance the visualization of these 3D representations and to provide an innovative immersive approach to interact with urban digital twins. We describe a pipeline for the design of a 3D model of an urban area suitable for an immersive visualization and natural interaction so that the users can have a sense of reality as if they are in the real world. Preliminary results are shown related to ourcase study in Matera,in Southern Italy.