The unassuming caretaker sweeping the wall of the block on Dywizjonu 303 is in fact Juba Mönster’s neighbor — a lawyer from Bremen who begins each day with the peculiar ritual of sweeping the street in front of his house. The sweeper’s shadow was painted in such a way that it creates an illusion during sunny mornings, when caretakers all over the world take to the streets with their brooms.