Specialists have completed a large-scale restoration of the Cathedral of Our Lady of Paris. The restoration work combined the efforts of more than 2,000 craftsmen and 250 companies, and about 700,000,000 euros were allocated for the project. Modern technologies, including digital modeling and artificial intelligence, played a key role in the reconstruction. These innovative methods made it possible to create highly accurate 3D models of the cathedral. They not only facilitated the restoration of damaged elements, but also improved the understanding of the building's internal structure. Art historian and architect Andrew Tallon conducted detailed laser scans of the Cathedral even before the fire. This data became the basis for the creation of a digital twin of Notre Dame. Autodesk, in collaboration with Art Graphique et Patrimoine, conducted additional scans to account for the changes caused by the fire. The modeling covered 12,000 objects and more than 30,000 square meters of surfaces. Both modern technology and traditional materials were used to restore the Cathedral. For example, 2,400 oak trees were used to restore the roof, and more than 2,000 unique sculptures and decorative elements were recreated inside the Cathedral. Notre Dame is scheduled to open on December 7, 2024