In several European countries, the non-reconstruction of disappeared monuments is by far the most preferred practice. For some, the lack of “authenticity”, that is, fidelity to history, devalues rebuilt structures as historical monuments. However, this vision is far from being shared everywhere in the world. In Japan, for example, where architecture is historically based on wood rather than stone, the reconstruction of historical monuments is ancestral custom, carrying cultural and historical significance.
This discussion about this topic cyrstallizes in the project of reconstructing the spire of the basilica of Saint-Denis in Paris.
See more in the (French) video below about the project or read more at Le Monde (Also French).