In the next, sixth, and at the same time the last room on the first floor of the Town Hall, the gallery presents mainly works of artists related to the artistic groups "Rytm", "Ryt", "Brotherhood of St. Luke", "Szczep Szukalszczyk herbu Rogate Serce" and the Vilnius Society of Visual Artists, which operated in the interwar period. Due to political changes in Europe after 1945, many members of the Vilnius artistic centre settled on the Vistula River. These included Bronisław Jamontt, Tymon Niesiołowski, Jerzy Hoppen and Kazimierz Kwiatkowski, who organised the same Faculty of Fine Arts at the Nicolaus Copernicus University.