The social changes throughout the twentieth century had provoked uneven development of cities within the former Czechoslovakia. Each of the political regimes that alternated at the periodicity of approximately twenty years had marked, through the ideology, not only the ethnic and social profile of the city and its districts, but also their urbanistic and architectonical characteristics, symbolism and the outer appearance of the streets. As a result, important changes occurred in the spatial division of the city as well as the identity of city spaces. The author analyzes the impacts of social changes on the spatial diversity of the city and social composition of its districts from the beginning of the twentieth century, but focuses especially on the processes of transformation of the post-socialist city and its present state. Analyses the role of local memory in the politics of the self-government of the city and in the attitudes and activities of its inhabitants.