This paper is an overview of structural interventions which should be made to the Baroque Oppersdorf Palace during its renovation. All main technical problems were analyzed and proper constructional solutions were presented. Several characteristic types of destruction were detected, caused by natural deterioration and also by mechanical influences (war destruction, lack of conservation etc.). The main building structure has survived from the Baroque period, except for the wooden roof. Some of the cellar vaults and some of them over the first floor were also not destroyed. However, some main reconstruction work was done, probably in the last few years of the 19th century. For example, a break with a new staircase and some masonry vaults over the cellar were changed to ones of Klein type on steel beams. The main aim of the reconstruction was to strengthen the historical structure of the building and adapt it to the modern architecture and to reorganize the buildings inner space, but keeping the external proportions, architectural details and ornaments unchanged.