How lasers helped rebuild Notre Dame

Technology played an important role in Notre Dame Cathedral’s stunning restoration, ensuring its survival after a devastating 2019 fire.

 Arch, Architecture, Gothic Arch, Building, Cathedral, Church, Spire, Tower, Person, Monastery

Notre Dame Cathedral in Paris has reopened five years after a devastating fire left the iconic landmark in ruins. Painstakingly restored to its original grandeur, the reconstruction relied on technologies, including lasers and 3D modelling, to recreate the historic structure.

The restoration effort was supported by data from art historian Andrew Tallon’s 2015 laser scans, which captured billions of precise points across the cathedral. These scans were combined with post-fire drone footage and modern technology to create a detailed 3D model that guided the process. Companies such as Autodesk and AGP donated their expertise to ensure accuracy.

The newly restored cathedral now includes updated features such as fire suppression systems, optimised lighting, and a modernised plaza, designed with the help of 3D visualisations. Experts believe these advancements set a precedent for using technology to preserve cultural heritage and assist in disaster recovery.

Looking ahead, the detailed 3D model will help maintain Notre Dame and safeguard its legacy for generations. This project serves as a testament to the power of innovation in protecting the world’s most treasured monuments.