On Wednesday, the United Nations marks International Holocaust Remembrance Day, in which the world honors the millions of victims who were murdered by the Nazis in World War II.
This year marks the 71st anniversary of the date Soviet forces entered the Auschwitz concentration camp complex and liberated about 7,000 prisoners. Some 1.1 million people are estimated to have died in the camp, including 960,000 Jews.
Many people who found themselves in Nazi concentration camps began their tragic journey at Platform 21 in Milan's central train station. There, victims were packed into freight cars and transported to concentration and extermination camps, including Auschwitz-Birkenau and Bergen-Belsen in Germany, and Fossoli and Belzano in Italy.
Italian journalist and filmmaker Luca Ferrari took a train from Platform 21, which has now been turned into a Holocaust memorial museum, to Auschwitz-Birkenau to capture the journey and the extermination camp's interior.
Take a look at some of Ferrari's haunting photos below.
This story was originally posted on HuffPost Italy and was translated into English.