Commemorations marking the 74th anniversary of liberating the Nazi German Auschwitz-Birkenau death camp are to be held in Oświęcim, southern Poland, on Sunday.
Several dozen former prisoners and state representatives, including Prime Minister Mateusz Morawiecki, are expected to take part in observances taking place at the site of the former camp.
Events include a wreath-laying ceremony at the so-called wall of death, against which Germans executed thousands of people.
The key commemorations will be held at a site where Germans carried out their entry procedures for new inmates such as stripping them naked, shaving them bald and tattooing a number on their arms.
There the survivors will share their testimonies of horrors they experienced and witnessed at the camp, after which Jews and Christians will join in prayer.
The German Auschwitz Birkenau camp operated from 1940 until its liberation by the Red Army on January 27, 1945.
More than 1.1 million people, mostly European Jews, as well as non-Jewish Poles, Roma and Sinti, Soviet POWs and people of many other nationalities, perished at Auschwitz during World War II.