Simon Wiesenthal (31 December 1908 – 20 September 2005) was an Austrian Holocaust survivor, Nazi hunter, and writer. He studied architecture, and was living in Lwów at the outbreak of World War II. He survived the Janowska concentration camp (late 1941 to September 1944), the Kraków-Płaszów concentration camp (September to October 1944), the Gross-Rosen concentration camp, a death march to Chemnitz, Buchenwald, and the Mauthausen concentration camp (February to May 1945).