Germany's darkest chapter: Auschwitz and the Holocaust

January 27 marks International Holocaust Remembrance Day, honoring the victims of the Nazi regime.

Auschwitz, operated by Nazi Germany and located in today's Poland, was the largest complex of concentration and extermination camps in Europe.

It has come to stand as the central symbol of the Holocaust, genocide, and inhumanity. At least 1.1 million people were murdered there, more than 900,000 of them Jews.