65 Treblinka Poland Extermination camp 1942/07/23 – 1943/10/19 700,000 - 900,000 [23][24] 66 Vaivara Estonia Concentration and transit camp 1943/09/15 – 1944/02/29 20,000 950 22 67 Warsaw Poland Concentration camp 1943 – 1944 8,000–9,000 4,000–5,000 68 Westerbork Netherlands Transit camp 1940/05 - 1945/04