This 3.5-hour educational tour about how this concentration camp claimed over 1 million victims is a must-see. The complex comprises 3 main camps: Auschwitz I was the administrative center; Auschwitz II, or Birkenau, was the extermination site; and Auschwitz III, or Monowitz, was a labor camp. Built in 1940, Auschwitz-Birkenau was the largest concentration camp operated by the Nazis. Before the liberation of Auschwitz on January 27, 1945, the SS attempted to destroy the camp and burn the archives. The Polish government restored Auschwitz–Birkenau as a moving memorial to the victims. Upon entering through the main entrance, see original camp buildings in the main part of the complex. Visit the museum with its permanent exhibition, an opportunity to learn about the real stories of prisoners and see their personal belongings. Finally, visit the extermination camp at Birkenau, where gas chambers and crematories are located. The duration of your visit to Auschwitz I lasts two hours and the visit to Auschwitz II lasts one hour. There are three breaks during the tour: the first is 10-20 minutes after arriving from Krakow; the second is 10-15 minutes before going to Auschwitz II, Birkenau Camp; and the third is 10 to 20-minute before heading back to Krakow.