To understand what is called the post-socialist, the post-soviet city, it is still necessary, 20 years after the fall of the Iron Curtain, to reread what was the socialist city, all the more so as the debate has arose again since the 1990s. There are three main ways to understand what means the relationship between an ideology ("socialist") and a spatial reality ("city"). The first one deals with the ideology which underlined the urban development, in the Soviet Union, and further in the rest of the Eastern Block. But this field is not very fertile, because the Marxist literature tells more about the relationship between rural and urban worlds than about what should be the nature of the socialist city. The second level is thus made of what ...