The defensive structures combined with the natural landscape form the basis of the urban carcass of historic cities. Their preservation enhances the compositional impact of fortification monuments in the urban environment. Most city fortifications remain in a degraded condition. The most complex group is represented by multicomponent „cityfortress” complexes, which, subject to professionally performed works on conservation, restoration and revitalization, can become a leading factor of integral architectural and urban value. The main problem of restoring degraded city-fortresses is keeping the balance between artistic integrity and material authenticity. Undoubtedly, only the ruin can be completely authentic. But the purpose of restoring fortifications in an urban environment is not to perpetuate their degradation in order to preserve material authenticity. Therefore, the main goal is to harmonize the architectural and urban environment by restoring and maintaining the state that the object had in its stage of highest architectural and urban development. In the context of the problem of organically incorporating defense monuments into the cultural landscapes of city-fortresses and restoring their leading role in the structure of urban centers, the methodology of conservation and restoration becomes of particular importance. It includes applying the approaches that, while keeping the preservation of authenticity intact, to restore the complexes in their lost compositional, spatial and urban integrity. This actualizes the use of a synthetic conservation and restoration methods (in particular an analogy method), which provides not only documentary conservation, but a certain environmental aestheticization of the object by a wider range of restoration means than those stipulated by the Venice Charter.