Holocaust survivors from around the world have come to Poland to commemorate the 70th anniversary of Auschwitz's liberation.
Here are just some of the faces and stories of Auschwitz survivors.
During the Warsaw Uprising in August 1944, a 19-year-old Jadwiga Bogucka and her mother were sent from their house to a camp in Pruszkow and then moved by train to Auschwitz. They were liberated on January 27, 1945.
Marian Majerowicz was 17 when he was sent to Auschwitz. He was briefly reunited with his father at the camp, who told him that his mother and younger brother were both killed in the gas chambers. His father did not survive the war.
Eva Fahidi was 18 in 1944 when she and her family were moved from Debrecen to Auschwitz. Her family did not survive the camp.
Jerzey Ulatowski was taken by train to Auschwitz when he was 13 years old. In January 1945 he managed to escape with his family as there was a lack of power in the barbed wire surrounding the camp.
Danuta Bogdaniuk-Bogucka was 10 years old when she was sent to Auschwitz with her mother. Danuta was part of Josef Mengele's experiments when she was there.
Lajos Erdelyi was sent to Auschwitz in May 1944 and was later moved to another camp. When he was freed he weighed under 30kg, but tried to walk home. Lajos collapsed, and was taken to a hospital by a farmer.