Most of the activity at the centre is concerned with prevention, but due importance is also attached to reparative treatment and restoration. Restoration work is aimed at improving the aesthetic reading of pieces on which, very often, restorers from much earlier generations have previously intervened, working according to criteria very different from those applied today. Needless to say, restoration is not carried out in the hope of returning works to their original state; but rather, to take into account the passing of time and any work that has already been carried out on the piece, and which now forms part of the history of restoration in Catalonia in general.