The Auschwitz Chambers Are Postwar Reconstructions

This claim has a single-grain-of-truth at its centre: the gas chamber at Auschwitz I shown to visitors is partly reconstructed. The Polish state museum, when it opened the site to the public in 1947, restored the chamber to its 1942 configuration after it had been converted by the SS in mid-1944 to an air-raid shelter. The reconstruction is documented, was published openly at the time, and is the subject of standard explanatory signage at the site itself. The deniers convert this acknowledged restoration into a claim that the entire physical evidence of the gas chambers is fabricated. The claim does not survive the actual record of what was reconstructed, what was original, and what is preserved in unambiguously original form at Birkenau, Majdanek and other sites.

The Auschwitz I gas chamber

The first gas chamber used for the killing of human beings at Auschwitz was a converted munitions store in the basement of the camp’s original crematorium, in the main camp (Auschwitz I, the brick-built former Polish army barracks, distinct from Birkenau). It operated from autumn 1941 to mid-1942, when the larger and more efficient facilities at Birkenau came online. The Auschwitz I chamber was then used intermittently for smaller killings until November 1944, when the SS converted the entire crematorium into an air-raid shelter, dividing the gas chamber by partition walls into smaller rooms, sealing the introduction openings in the roof, and adding ventilation appropriate to a shelter rather than a killing facility.

When the Polish state museum took over the site in 1947, it restored the building to its 1942 configuration. The partition walls were removed. The roof openings were re-opened. The ovens, which had been removed by the SS in November 1944, were rebuilt to original specification using surviving examples. The reconstruction was based on the original construction drawings (held in the Zentralbauleitung files captured by the Soviets), on the testimony of surviving SS personnel including Höss, on the testimony of surviving prisoners who had worked in the building, and on the physical traces still on site. The Polish museum’s staff, including its founding director Kazimierz Smoleń (himself a former Auschwitz prisoner), did not conceal the restoration. It was published in the museum’s official guidebooks from 1948 onwards. It has been re-explained in scholarly publications including the standard study by Robert Jan van Pelt and Debórah Dwork, Auschwitz: 1270 to the Present (1996).

The reconstruction does not invalidate the building as evidence. The original walls, foundations, roof structure and basement layout are largely original 1941 to 1942 fabric. The original Zyklon B introduction openings, which had been sealed by the SS in November 1944, were reopened to their original positions, which can be seen in the construction drawings and in pre-1944 photographs of the building. The chamber as it stands is the same building, in the same place, restored to its killing-period configuration with documentary justification for each restored element.

The Birkenau crematoria

The substantial killing capacity of Auschwitz was at Birkenau, in the four large purpose-built crematoria (II, III, IV, V) constructed between 1942 and 1943. These were not reconstructed by the post-war Polish state. They were demolished by the SS itself in the final months of the camp’s operation. Crematorium IV was destroyed in the Sonderkommando uprising of 7 October 1944 and never rebuilt. Crematorium V was demolished by the SS on 26 January 1945, the day before the Red Army arrived. Crematoria II and III were demolished on 20 January 1945, again by the SS, in an explicit attempt to destroy the evidence; the demolition was photographed at the time by SS personnel, the photographs survived, and the demolition orders signed by the Auschwitz commandant survive in the Zentralbauleitung files.

The ruins of all four crematoria are visible at Birkenau today. They have not been reconstructed. The underground gas chambers of crematoria II and III, partially collapsed by the SS demolition, are still there: the roof slabs lie on top of what were the chambers, with the introduction columns visible where they were broken off, the gas-tight doors recoverable from the rubble, the ventilation duct openings traceable. The Polish state museum, the Auschwitz-Birkenau State Museum, has done minimal restoration of the Birkenau crematorium ruins, mostly stabilising the standing fragments to prevent further collapse. The ruins have been examined by every relevant generation of investigators, including the Polish judicial commission of 1945, the Soviet Extraordinary State Commission of 1945, the Israeli investigators preparing the Eichmann case in the late 1950s, the German investigators preparing the Frankfurt Auschwitz Trial in the 1960s, the international commission preparing the Pressac volume in the 1980s, and the team of expert witnesses for the Irving v. Lipstadt trial in the late 1990s. They have all confirmed that the ruins are consistent with the construction drawings, with the operational testimony, and with the throughput claims.

The other surviving gas chambers

The denier framing also requires that the listener forget about the other gas chambers that survive in unambiguously original form. The gas chamber at Majdanek, where the rapid Soviet liberation in July 1944 caught the SS before it could destroy the evidence, survives substantially intact, including the original brick walls, the original gas-tight doors, the original Zyklon B introduction openings, and the visible Prussian blue staining of the walls from years of cyanide exposure. The gas chamber at Sachsenhausen survives in a less complete form. The gas chamber at the Dachau experimental facility (which the SS appears to have built but used only for testing purposes) survives. The dedicated gas chamber at the Mauthausen complex survives. The mobile gas vans used by the Einsatzgruppen, recovered post-war, are documented physically and photographically. The denier argument that the chambers were post-war reconstructions has to apply, somehow, to all of these wholly unconnected sites in addition to Auschwitz.

Why the claim is harmful

The claim is harmful because it picks at a known, documented, openly published reconstruction of one building (the Auschwitz I gas chamber) and uses it to imply that all the physical evidence is fabricated. The implication does not survive contact with Birkenau, Majdanek, Sachsenhausen, Mauthausen, the Operation Reinhard camp sites (where archaeological work has confirmed the gas chamber foundations even where the buildings themselves were demolished), or the documentary record of the construction. The Auschwitz I restoration is precisely the kind of openly acknowledged museum practice that bad-faith argument can use, and the deniers have used it. The site signage acknowledges the restoration. The scholarly literature acknowledges it. The deniers do not invent the fact of restoration; they invent the inference that all the evidence is therefore made up.

What was reconstructed at Auschwitz I, and on what documentary basis? What survives at Birkenau, Majdanek and the other sites? Where can the construction drawings and demolition photographs be read?

See also

• Auschwitz-Birkenau State Museum
• The Irving versus Lipstadt Libel Trial

---

Sources

• Robert Jan van Pelt and Debórah Dwork, Auschwitz: 1270 to the Present, Yale University Press, 1996, with full treatment of the post-war reconstruction history and the Birkenau ruins
• Zentralbauleitung der Waffen-SS und Polizei Auschwitz, original construction drawings for the Auschwitz I gas chamber and crematorium and for the Birkenau crematoria II, III, IV and V, Russian State Military Archive, Moscow, fond 502
• Auschwitz-Birkenau State Museum, official guidebooks from 1948 onwards, with consistent acknowledgement of the Auschwitz I restoration
• SS demolition photographs and orders for the Birkenau crematoria, January 1945, in the Zentralbauleitung files and the Auschwitz-Birkenau State Museum collection
• Jean-Claude Pressac, Auschwitz: Technique and Operation of the Gas Chambers, Beate Klarsfeld Foundation, 1989, with detailed photographic and architectural documentation of the surviving Birkenau ruins
• Polish judicial commission, report on Auschwitz, 1945, in the Auschwitz-Birkenau State Museum archive
• Soviet Extraordinary State Commission, report on Auschwitz, 6 May 1945, Nuremberg Document USSR-008
• Hermann Langbein, People in Auschwitz, English edition, University of North Carolina Press, 2004, on the Frankfurt Trial findings
• Richard J. Evans, Lying about Hitler: History, Holocaust, and the David Irving Trial, Basic Books, 2001, with the expert witness conclusions on the Birkenau ruins
• Caroline Sturdy Colls, Holocaust Archaeologies: Approaches and Future Directions, Springer, 2015, on the archaeological survey work at Treblinka, Sobibór, Bełżec and other Operation Reinhard sites
• State Museum at Majdanek, “Gas Chambers”, https://www.majdanek.eu
• USHMM Holocaust Encyclopedia, “Auschwitz” and “Killing Centres”, https://encyclopedia.ushmm.org