An undated archive photograph shows Auschwitz II-Birkenau main guard house which prisoners called “the gate of death”. An undated archive photograph shows Auschwitz II-Birkenau’s main guard house which prisoners called “the gate of death” and the railway with the remains of abandoned crockery. The railway, which was built in 1944, was the last stop for the trains bringing Jews to the death camp. REUTERS/HO-AUSCHWITZ MUSEUM