Secretary-General of the United Nations Ban Ki-moon (C-L) and his wife Yoo Soon-taek (C-R) are accompanied by Auschwitz-Birkenau State Museum director Piotr Cywinski (L) and former Auschwitz prisoner and holocaust survivor Marian Turski (R) as they lay a wreath during their visit at the former Auschwitz concentration camp at the Auschwitz-Birkenau memorial site on November 18, 2013 in Oswiecim, Poland. AFP PHOTO / BARTOSZ SIEDLIK