Entrance is free in general, but visitor numbers are regulated by a ticket system. Be aware that because of the large numbers of visitors, entry to the Auschwitz I site is done exclusively on a paid guided (yet unfortunately rather rushed) tour between 10:00 to 15:00 during the period from 1 April to 31 October. You can visit the site on your own (which is highly recommended, as visitors can go at their own pace, see what they want to see, and have a much more meaningful experience) if you arrive before 10:00 (better 8:00-9:00) or after 15:00 (depending on the season and day of week). This is recommended if you're staying nearby in Katowice or Kraków and don't have your own car, with some trains from Kraków and Katowice Główny arriving between 8-10. Guided tours cost 45PLN (discounted price for students up to 24 years of age is 30PLN). Students with an ISIC card are granted free entrance during tour hours. If you're a small group (~4 or less), it's not too hard to buy tickets on site (but depending on the season, you might have to wait depending on availability), but larger groups should book tickets in advance.
In 1983, French scholar George Wellers was one of the first to use German data on deportations; he arrived at a figure of 1,471,595 deaths, including 1.35 million Jews and 86,675 Poles.[191] A larger study in the late 1980s by Franciszek Piper, published by Yad Vashem in 1991,[192] used timetables of train arrivals combined with deportation records to calculate that, of the 1.3 million deported to the camp, 1,082,000 died there between 1940 and 1945, a figure (rounded up to 1.1 million) that he regarded as a minimum[193] and that came to be widely accepted.[e]

That month, Himmler ordered the evacuation of all camps, charging camp commanders with "making sure that not a single prisoner from the concentration camps falls alive into the hands of the enemy".[240] Beginning on 17 January, 56,000–58,000 Auschwitz detainees—over 20,000 from Auschwitz I and II, over 30,000 from subcamps, and two-thirds of them Jews—were evacuated under guard, largely on foot, in severe winter conditions, heading west.[241][242] Around 2,200 were evacuated by rail from two subcamps; fewer than 9,000 were left behind, deemed too sick to move.[243] During the marches, camp staff shot anyone too sick or exhausted to continue, or anyone stopping to urinate or tie a shoelace. SS officers walked behind the marchers killing anyone lagging behind who had not already been shot.[235] Peter Longerich estimates that a quarter of the detainees were thus killed.[236] Those who managed to walk to Wodzisław Śląski and Gliwice were sent on open freight cars, without food, to concentration camps in Germany: Bergen-Belsen, Buchenwald, Dachau, Flossenburg, Gross-Rosen, Mauthausen, Dora-Mittelbau, Ravensbruck, and Sachsenhausen.[244]

The Hitler cabinet used the terms of the Reichstag Fire Decree and later the Enabling Act to initiate the process of Gleichschaltung ("co-ordination"), which brought all aspects of life under party control.[25] Individual states not controlled by elected Nazi governments or Nazi-led coalitions were forced to agree to the appointment of Reich Commissars to bring the states in line with the policies of the central government. These Commissars had the power to appoint and remove local governments, state parliaments, officials, and judges. In this way Germany became a de facto unitary state, with all state governments controlled by the central government under the NSDAP.[26][27] The state parliaments and the Reichsrat (federal upper house) were abolished in January 1934,[28] with all state powers being transferred to the central government.[27]

Hitler told a party leader in 1934: "The economic system of our day is the creation of the Jews".[262] Hitler said to Benito Mussolini that capitalism had "run its course".[262] Hitler also said that the business bourgeoisie "know nothing except their profit. 'Fatherland' is only a word for them."[263] Hitler was personally disgusted with the ruling bourgeois elites of Germany during the period of the Weimar Republic, who he referred to as "cowardly shits".[264]
Beginning in April 1933, scores of measures defining the status of Jews and their rights were instituted.[49] These measures culminated in the establishment of the Nuremberg Laws of 1935, which stripped them of their basic rights.[50] The Nazis would take from the Jews their wealth, their right to intermarry with non-Jews, and their right to occupy many fields of labour (such as law, medicine, or education). Eventually the Nazis declared the Jews as undesirable to remain among German citizens and society.[51]
Officials and lawyers in the Third Reich were also intrigued by anti-miscegenation statutes, because the policing of sex was necessary to cleanse the Aryan race. Hitler, who had been largely asexual during his crucial years as a failing painter in Vienna, was obsessed with sex and blood. The United States at the time was a global leader in banning mixed marriages, going so far as to criminally punish those who defied the law. (Many of these laws were not struck down in the United States until the Supreme Court’s 1967 Loving v. Virginia case.) The Prussian Memorandum explicitly invoked U.S. laws that promoted segregation to maintain racial purity, and the sexual morality of white women in particular. Similarly, the third Nuremburg Law expressly forbid marriages and extra-marital relations between Germans and Jews, and promised hard labor in prison for law-breakers. The more one reads about the American and Nazi fixation on race, the more evident it becomes that at the very core of racist ideology is a primal fear of sexual inadequacy, of pollution, of mixing. Racial nationalism, the ideology of the Nazis, took this idea to its logical end.
In 1933, after Adolf Hitler's Nazi Party won the federal election, Edith Frank and the children went to stay with Edith's mother Rosa in Aachen. Otto Frank remained in Frankfurt, but after receiving an offer to start a company in Amsterdam, he moved there to organize the business and to arrange accommodations for his family.[9] He began working at the Opekta Works, a company that sold the fruit extract pectin, and found an apartment on the Merwedeplein (Merwede Square) in the Rivierenbuurt neighbourhood of Amsterdam. By February 1934, Edith and the children had joined him in Amsterdam. The Franks were among 300,000 Jews who fled Germany between 1933 and 1939.[10]
When Germany invaded Poland in September 1939, triggering World War II, Adolf Hitler ordered that the Polish leadership and intelligentsia be destroyed.[16] Approximately 65,000 civilians, viewed as inferior to the Aryan master race, had been killed by the end of 1939. In addition to leaders of Polish society, the Nazis killed Jews, prostitutes, the Roma, and the mentally ill.[17][18] SS-Obergruppenführer Reinhard Heydrich, then head of the Gestapo, ordered on 21 September 1939 that Polish Jews be rounded up and concentrated into cities with good rail links. Initially the intention was to deport them to points further east, or possibly to Madagascar.[19] Two years later, in June 1941, in an attempt to obtain new territory, Hitler invaded the Soviet Union.[8]

In most of the concentration camps, the Nazi SS either installed or had plans to install gas chambers to assist in their daily business of killing prisoners who were too weak or sick to work. Gas chambers were also to kill small targeted groups of individuals whom the Nazis wanted to eliminate (Polish resistance fighters, Soviet POWs, etc.). This was the purpose of the installation of gas chambers at Mauthausen, Sachsenhausen, Stutthof, Auschwitz I, Ravensbrück, Lublin/Majdanek, etc.

When the Nazi Party emerged from obscurity to become a major political force after 1929, the conservative faction rapidly gained more influence, as wealthy donors took an interest in the Nazis as a potential bulwark against communism.[39] The Nazi Party had previously been financed almost entirely from membership dues, but after 1929 its leadership began actively seeking donations from German industrialists, and Hitler began holding dozens of fundraising meetings with business leaders.[40] In the midst of the Great Depression, facing the possibility of economic ruin on the one hand and a Communist or Social Democratic government on the other hand, German business increasingly turned to Nazism as offering a way out of the situation, by promising a state-driven economy that would support, rather than attack, existing business interests.[41] By January 1933, the Nazi Party had secured the support of important sectors of German industry, mainly among the steel and coal producers, the insurance business and the chemical industry.[42]
According to the famous philosopher and political theorist, Hannah Arendt, the allure of Nazism as a totalitarian ideology (with its attendant mobilisation of the German population) resided within the construct of helping that society deal with the cognitive dissonance resultant from the tragic interruption of the First World War and the economic and material suffering consequent to the Depression and brought to order the revolutionary unrest occurring all around them. Instead of the plurality that existed in democratic or parliamentary states, Nazism as a totalitarian system promulgated "clear" solutions to the historical problems faced by Germany, levied support by de-legitimizing the former government of Weimar and provided a politico-biological pathway to a better future, one free from the uncertainty of the past. It was the atomised and disaffected masses that Hitler and the party elite pointed in a particular direction and using clever propaganda to make them into ideological adherents, exploited in bringing Nazism to life.[275]
The closest airport to the site is John Paul II International Airport (IATA: KRK), better known as Balice Airport by locals, and is 54 km (34 mi) to the west next to Kraków on the A4 motorway. Among the airlines serving Balice are Air Berlin, AlItalia, Austrian Airlines, British Airways, Brussels Airlines, KLM, LOT, Lufthansa, Norwegian Air, SprintAir, Swiss International Air Lines, SAS Scandinavian Airlines, Air France, Iberia, Aegean Airlines, and Finnair. Additionally, a number of low cost airlines also service the city, includeing easyJet, Ryanair, Jet2.com, Eurowings, and Vueling.
Before he joined the Bavarian Army to fight in World War I, Hitler had lived a bohemian lifestyle as a petty street watercolour artist in Vienna and Munich and he maintained elements of this lifestyle later on, going to bed very late and rising in the afternoon, even after he became Chancellor and then Führer.[47] After the war, his battalion was absorbed by the Bavarian Soviet Republic from 1918 to 1919, where he was elected Deputy Battalion Representative. According to historian Thomas Weber, Hitler attended the funeral of communist Kurt Eisner (a German Jew), wearing a black mourning armband on one arm and a red communist armband on the other,[48] which he took as evidence that Hitler's political beliefs had not yet solidified.[48] In Mein Kampf, Hitler never mentioned any service with the Bavarian Soviet Republic and he stated that he became an antisemite in 1913 during his years in Vienna. This statement has been disputed by the contention that he was not an antisemite at that time,[49] even though it is well established that he read many antisemitic tracts and journals during time and admired Karl Lueger, the antisemitic mayor of Vienna.[50] Hitler altered his political views in response to the signing of the Treaty of Versailles in June 1919 and it was then that he became an antisemitic, German nationalist.[49]
After the outbreak of war, people from across Europe were deported to Mauthausen, which gradually developed into a system of several interconnected camps. During this phase, Mauthausen and Gusen were the concentration camps with the harshest imprisonment conditions and the highest mortality. Prisoners at the bottom of the camp hierarchy had barely any chance of surviving for long. Those who were ill or ‘useless’ to the SS were in constant danger of their lives. In 1941 the SS started to construct a gas chamber and other installations at Mauthausen for the systematic murder of large groups of people.
The courtyard between blocks 10 and 11, known as the "death wall" served as an execution area for Poles not in Auschwitz who had been sentenced to death by a criminal court—presided over by German judges—including for petty crimes such as stealing food.[139] Several rooms in block 11 were deemed the Polizei-Ersatz-Gefängnis Myslowitz in Auschwitz ("Alternative jail of the police station at Mysłowice").[140] There were also Sonderbehandlung cases ("special treatment") for Poles and others regarded as dangerous to the Third Reich.[141] Members of the camp resistance were shot there, as were 200 of the Sonderkommandos who took part in the Sonderkommando revolt in October 1944.[142] Thousands of Poles were executed at the death wall; Höss wrote that "execution orders arrived in an unbroken stream".[143]
In the Soviet Union by 1922 there were 23 concentration camps for the incarceration of persons accused of political offenses as well as criminal offenses. Many corrective labour camps were established in northern Russia and Siberia, especially during the First Five-Year Plan, 1928–32, when millions of rich peasants were driven from their farms under the collectivization program. The Stalinist purges of 1936–38 brought additional millions into the camps—said to be essentially institutions of slavery.
The first mass transport to Auschwitz I, which included Catholic prisoners, suspected members of the Polish resistance, and 20 Jews, arrived on 14 June 1940 from prison in Tarnów, Poland. They were interned in the former building of the Polish Tobacco Monopoly, adjacent to the site, until the camp was ready.[24] By the end of 1940, the SS had confiscated land around the camp to create a 40-square-kilometre (15 sq mi) "zone of interest" surrounded by a double ring of electrified barbed wire fences and watchtowers.[25] The inmate population grew quickly as the camp absorbed Poland's intelligentsia and dissidents. By March 1941, 10,900 were imprisoned there, most of them Poles.[22]
Located in Nazi-occupied Poland, Auschwitz was the largest of all of the German Nazi concentration, forced labor, and extermination camps. More than 1.1 million people were murdered behind the barbed-wire fences of Auschwitz between May 1940 and January 1945. Around 1 million of those murdered were Jews, along with nearly 75,000 Poles, 21,000 Sinti and Roma, 14,000 Soviet prisoners of war, and nearly 15,000 others whom the Nazis deemed “inferior” or “undesirable” (including those who were allegedly homosexual, Jehovah’s Witnesses, and people the Nazis called criminals). Those kept as prisoners were stripped of their names, assigned numbers, and subjected to forced labor and brutal—frequently deadly—conditions.
Over the years, there have been dissenting views about the preservationist approach. “I’m not convinced about the current plans for Auschwitz,” said Jonathan Webber, a former member of the International Auschwitz Council of advisers, who teaches in the European Studies program at the Jagiellonian University in Krakow. “If you have a very good memorial, you could achieve that without having to have all this effort on conservation and restoration,” he added.

By 1940, the CCI came under the control of the Verwaltung und Wirtschaftshauptamt Hauptamt (VuWHA; Administration and Business office) which was set up under Oswald Pohl.[25] Then in 1942, the CCI became Amt D (Office D) of the consolidated main office known as the SS-Wirtschafts-Verwaltungshauptamt (SS Economic and Administrative Department; WVHA) under Pohl.[25] In 1942, the SS built a network of extermination camps to systematically kill millions of prisoners by gassing. The extermination camps (Vernichtungslager) and death camps (Todeslager) were camps whose primary function was genocide. The Nazis themselves distinguished the concentration camps from the extermination camps.[26][27] The British intelligence service had information about the concentration camps, and in 1942 Jan Karski delivered a thorough eyewitness account to the government.