Auschwitz-Birkenau is the most recognizable and the largest of all Holocaust sites. The former Nazi concentration camp site from the 1940s is a poignant reminder of the innumerable lives lost and was turned into a memorial and a museum in the aftermath. While several structures are dilapidated, some buildings on the premises have been kept intact. The infamous train track between two camps exudes a somber air of memories even today, years after the Holocaust. Turned into a museum, the exhibits unfold the hard-hitting journey of millions of prisoners, with their personal belongings still preserved from one of the darkest times in world history. A UNESCO World Heritage Site, the Auschwitz-Birkenau Camp, which once witnessed a macabre past, is now a tribute to its lost victims.