The objective of this case study is to present the issues, methods and experiments underway to enable the acquisition of data and the creation of digital models of the timber structures, also known as the Forest, of Notre-Dame de Paris at different temporal states. Among the different models created, a restitution was developed from all the data collected and produced. This interpretation is the result of collecting, collating, and synthesizing heterogeneous data on pre- and post-fire structures. Indeed, the constitution of this model is also based on new data, obtained after the accident, which required the development of ad-hoc solutions to meet the various constraints of the site. These different resources have made it possible to produce the first univocal and three-dimensional restitution of the frameworks before - and after - the fire and the way to gather in particular all the partial data having been used to create it. This experimentation proposes the necessary qualities to enrich the future ecosystem of analysis and multidimensional memorization for the restoration and conservation of Notre-Dame.