Adaptation consists in adapting the reconstructed monument to purposes other than these, which he has served so far. In a technical sense, adaptation works are to improve the utility and functional values of the building, which can be manifested, inter alia, in the appropriate transformation of the interior (if they have no museum significance, and without these measures, the interiors cannot fulfill a specific utility role), installation of sanitary and technical installations, etc.. The entire building or a part of it can be adapted depending on the function, intended needs and goals.
Proper adaptation of individual monuments, and even entire architectural complexes, for socially useful purposes, ensuring the proper use of objects in a manner corresponding to their historic value, is one of the most important maintenance and protection measures. The issues of adaptation are particularly important in the maintenance or reconstruction of facilities that may serve the relevant cultural or tourist-recreational needs., and also in the maintenance of old town housing complexes. Adaptation may not, however, entail changes to the structural system, proportions or the design of the building.