The relevance of the article is due to the increased attention of society and the state to the problems of perpetuating the memory of significant events and the use of the past for political purposes. The article presents the results of a comparative analysis of the celebrations of the three-hundredth anniversary of Siberian cities in the chronological period from the beginning of the XX century to the beginning of the XXI century. Special attention is paid to the commemorative component of the celebrations. The novelty of the study is seen in the fact that for the first time the meanings of memory policy reflected in the celebrations are clarified; socio-political and cultural contexts that have affected the nature of the celebrations in different years are established; the features of historical continuity and gaps in the use of historical symbols during the celebrations are revealed. But, since the nature of the celebrations reflected the anti-government views and requirements of its organizers, the holiday did not take place under pressure from the authorities. The 300th anniversary of Krasnoyarsk was officially celebrated in 1928 already in Soviet times. The celebrations served to propagate the significant achievements of the Soviet state in solving the old problems of Siberia. Cultural institutions of Krasnoyarsk on the occasion of the anniversary received funds for the further development of urban infrastructure. The anniversary of Yakutsk was not celebrated in 1932, which was due to the recent suppression of the national opposition in Yakutia. The 300th anniversary of Irkutsk was celebrated twice. This was due to the growth of regional identity, nostalgia for the pre-revolutionary Past and the strengthening of local political elites. The anniversary of Omsk in 2016 did not help the city to solve its economic and cultural problems. At the same time, it demonstrated the disunity of Omsk inhabitants, who evaluate the local past too differently. The classification of historical symbols constantly used at the level of propaganda, including the symbols "denigrating", glorifying and romanticizing the past of the region, is proposed. It is proved that all these symbols were invariably used during the celebrations, but depending on the political and ideological contexts, their reading, frequency and nature of application changed.