At the start of the Second World War, Poland was divided up, not for the first time. The Nazi and Soviet sectors are shown on this map, marked in pencil and signed in red (Ribbentrop) and blue (Stalin) with the date of the German-Soviet Boundary and Friendship Treaty. Great Britain and France did not openly condemn the pact and the country was spliced into two. In the exhibition, the map dominates the wall while a light carves its way through a list of towns. And on the right you might just be able to make out a little piece of barbed wire, rescued from the fence that cut this country into two.