There were a large church fire in Stockholm in 1990, at Katarina church, Katarinabranden 1990 – Wikipedia , and the reason for the fire was some faulty electrical wiring in one of the large church lamps. The church was next door to a fire house, but couldn't be saved, only the outer walls were left the next morning. The church was rebuilt, like it had been after a fire in 1723, it took five years and it was reaugurated in 1995. It is possible to find out where, and how, a fire started, and for a church to be rebuilt again (and again). The new interior is not exactly as the old one, as it was not possible to recreate it, but much of the material used have been done in the same techniques and similar materials as was used when the church was built for the first time in the later half of the 1600s. Katarina Church - Wikipedia
Notre Dame is not only a wonderful religious monument, it is also a statement of what man can build, in a time when all had to be done by human power (with some help from animals), from cutting the trees and the stone for the building, to move those things to Paris, and then finally erect the church. Thankfully much of the original marvels in the church was saved, such as most of the glass windows and statues, so it will not be impossible to make Notre Dame as magnificent as it once was. (In my opinion , skip the spire, it was a relatively new addition, the roof will look better without it.)
Notre Dame is not only a wonderful religious monument, it is also a statement of what man can build, in a time when all had to be done by human power (with some help from animals), from cutting the trees and the stone for the building, to move those things to Paris, and then finally erect the church. Thankfully much of the original marvels in the church was saved, such as most of the glass windows and statues, so it will not be impossible to make Notre Dame as magnificent as it once was. (In my opinion , skip the spire, it was a relatively new addition, the roof will look better without it.)