Polish street artists ' [UNK] ' have been painting the sides of buildings across the country . Their work has appeared in Poland , Russia and Germany . `` For us most the important thing is to create an illustration where people could stop in front of it and turn on their imagination for a couple of minutes , '' he says . Artist Jan Rak has also painted house - side murals in Poland and the UK .
Polish street artists ' [UNK] ' have been painting the sides of buildings across the country . Their work has appeared in Poland , Russia and Germany . Artist Jan Rak has also painted house - side murals in Poland and the UK .