The last two are very modern buildings
Notre dame was rebuilt a few times, but never completely
We do "conservation of cultural heritage" in the west and we have been doing it for centuries
The "Veneranda Fabbrica del Duomo di Milano" Is
> a 600-year-old organization that was established to supervise the construction of the Cathedral of Milan (the "Duomo"). The organization is still active and involved with the maintenance, preservation, and restoration of the cathedral.