The building that stood there before the fire wasn't "authentic" either by that measure. The building that recently burnt down had been completely renovated and

The building that stood there before the fire wasn't "authentic" either by that measure. The building that recently burnt down had been completely renovated and rebuilt several times and looked nothing like the building they first put up. The building that will stand there after this latest round of renovation will be a new building, but it won't be any less 'authentic' than any of the other renovations that came before.