On April 15, 2019, people from around the globe watched in horror as one of the world’s most renowned historic structures became engulfed in flames. At the time, the Notre Dame Cathedral was undergoing a restoration project, at the center of which were the building’s spire, stonework and roof timbers. The fire started in the cathedral’s wooden attic and was only discovered after the blaze was well underway. 400 firefighters battled with the flames for two hours — the fire was fought from the interior in order to reduce damage to the structure. By the time the fire was under control, the spire and the majority of the cathedral’s roof had collapsed, destroying the vaulted ceiling in the process. Luckily, there were no casualties, and most of the relics and the art within the cathedral were undamaged.