Note: Railway town infamous as the center for two Nazi concentration camps. The first camp, Treblinka, was opened in 1941. The second, "T.II" or Treblinka II, was situated one mile away from the first, and opened in July 1942. Both camps were operated by the Nazis as an effort to exterminate the Jews of Poland, then occupied by Germany. A prisoner-worker revolt at the camps failed in 1943. Treblinka II was closed in July 1943. The first Treblinka camp closed in July of 1944. The total number of victims is estimated between 731,000-800,000.