The intervention work in heritage are always research projects about a particular monument or the culture or historical circumstances that shaped it. We argue that a monument musealization must be specific to that particular building, so that restoration, outreach publications and musealization are part of the same project. In some cases, such as the castle of Ponferrada or the Wall of Ibiza, the documents generated in the work of the Master Plans has become on the basis of the musealization. In other cases we have also been fortunate to be able to personally direct musealizations and temporary or permanent exhibitions of some of the buildings in which we intervened.