The coffin portrait phenomenon related to the social mores of the ancient Sarmatia on the old border areas. The coffin portraits from Międzyrzecze were shown at many exhibitions, among others, in Paris, London, Zurich, Rome, Moscow, Helsinki and Bonn. In addition to funerary portraits the Museum has a collection of portrait paintings (the local gentry, Międzyrzecze’s governors, including the sepulchral painting and representational painting of the Międzyrzecze bourgeoisie) with the representational character (mainly XVII - XIX century). On the exhibition there are also the portraits of Polish kings, including the work of Marcello Bacciarelli picturing the King Stanisław August Poniatowski.