The fire protection industry will score a major win with the reopening of Notre-Dame Cathedral in December 2024, which will pioneer a novel fire protection system. According to Philippe Jost, president of the Rebuilding Notre-Dame de Paris public body, the advanced fire safety system is part of the comprehensive reconstruction effort following the fire that severely damaged the cathedral in 2019. The new fire protection measures being installed at Notre-Dame mark a significant advancement in safeguarding historic structures. One of the standout features is a state-of-the-art vaporization system, a first for cathedrals in France. This innovative system is designed to immediately halt the spread of any fire outbreak, providing unprecedented protection for the venerable structure. The vaporization system is strategically installed below the roof and within the spire. The nature of the project necessitated that the entire concept of fire protection be rethought in order to meet the unique specifications that the Cathedral required. The installation of a sophisticated system such as this is seen a huge victory for the fire protection industry in Paris as well as a first case study for new approaches to the preservations of historical monuments. While the restoration efforts are moving forward, the exact cause of the 2019 fire remains under investigation. Initial inquiries suggested an accidental cause, potentially linked to an electrical fault or a cigarette. More than five years later, investigating judges are still working to determine the definitive cause of the blaze. The restoration of Notre-Dame, a UNESCO-listed building that previously attracted 12 million visitors annually, has encountered multiple challenges. Since the tragic fire on April 15, 2019, which saw the cathedral's steeple crash down, the rebuilding effort has been closely watched worldwide. The intricate task of restoring the historic structure has been compounded by the need to integrate modern fire protection systems without compromising its architectural integrity.