I believe the Norte Dame Cathedral should be rebuilt with the same gothic designs as it was originally built. I don’t think modernizing it would be a good idea due to the fact that if the fire never happened they wouldn’t be renovating it or changing a single thing about it. If they try to modernize it the cathedral would loose the character of the building as a whole. Changing the way the cathedral is built will through the whole design off. Since it already has a gothic design too if it should just remain constant throughout the whole cathedral.
