The spatial effect of the no longer existing original is taken up by the appearance of the protective building, which - even with the biggest restraint - goes beyond its actual function. In order to counteract that, a timber construction was planned, which should allusively be an approach of the original structure. Different criteria (purely functional, modern arrangement, following the appearance of the buildings etc.) were discussed and calculated. Finally, the model of a protective building turned out to be unsatisfactory, since the substance, which was to be protected, would essentially have consisted of foundations