Louvre City (1990)

A voyage into the museum's reserves, and part of the extra work involved to mount the expositions after the renovation of the Louvre in the 1980s, when the glass pyramid was added to the classic buildings. From the preservation rooms through the frame and painting retouches by experts, to the personnel instruction on how to be efficient in protecting the collections, and look nice to the visitors. (Written on IMDB by Artemis-9)