IN-FILL DEVELOPMENT ARCHITECTURE, AS ELEMENT OF POST SECOND WAR RECONSTRUCTION OF CITY OF POZNAN. CASE STUDY OF JOSEPH STÜBBEN’S EXTENSION PLAN OF THE CITY FROM YEARS 1902-1918.

"The concept of the post-war reconstruction of many Eastern European cities, shaped as a result of the actions of German town planners at the turn of the 19th and 20th centuries, in many cases consisted of negation, non-continuation or abandonment of previously set development directions. The subject of studies in this text will be the city of Poznań, which continued to develop in the post-war period on the basis of spatial arrangement created as a result of actions of Joseph Stübben in the years 1902-1918.The post-war reconstruction of the city after 1945 preserved its main urban layout created during the modernization period with the participation of a German town planner. The structure of the city preserved in this way consisted mainly of multi-family residential buildings. Urban planning and architectural activities as part of the reconstruction of the city after 1945 were aimed at continuing this concept. A critical analysis of these activities is planned in the following text. Housing construction was an important matter in the period of socialism in Eastern Europe, which on the one hand, supported propaganda activities, but on the other hand, increased the prestige of the authorities, which contributed funds to building new houses for the so-called ""working class"". ""The investor on behalf of the state were housing cooperatives, which were responsible for the preparation of project documentation, which was ordered from state design offices. The post-war reconstruction of the city of Poznań, with the use of complementary buildings, became an interesting experimental field for architects and town planners. The research presented in the text will aim to refer to the creative attitudes of the time, as well as to confront the activities on these issues carried out during the communist period and in the post-1989 period. The aforementioned urban and architectural activities can be treated as an important element of the concept of heritage protection, seen through the prism of over 100 years of history of the concept of a modern city created by Joseph Stübben at the beginning of the 20th century."