![Main facade of block 21 located in Auschwitz, nazi concentration camp in Oswiecim, Poland. Building used by Doctor Mengele to experiment with people Stock Photo - Alamy Main facade of block 21 located in Auschwitz, nazi concentration camp in Oswiecim, Poland. Building used by Doctor Mengele to experiment with people Stock Photo - Alamy](https://c8.alamy.com/comp/PE8B51/main-facade-of-block-21-located-in-auschwitz-nazi-concentration-camp-in-oswiecim-poland-building-used-by-doctor-mengele-to-experiment-with-people-PE8B51.jpg)
Main facade of block 21 located in Auschwitz, nazi concentration camp in Oswiecim, Poland. Building used by Doctor Mengele to experiment with people Stock Photo - Alamy
Former Auschwitz I. Hospital ward on the first floor of block 21, with the Polish Red Cross nurses looking after the patients standing in the centre — Google Arts & Culture
![Door into Block 21, Chirurgishche (Surgery) and Krankenbau (hospital courtyard) at Auschwitz I Nazi concentration camp Stock Photo - Alamy Door into Block 21, Chirurgishche (Surgery) and Krankenbau (hospital courtyard) at Auschwitz I Nazi concentration camp Stock Photo - Alamy](https://c8.alamy.com/comp/CBFN3W/door-into-block-21-chirurgishche-surgery-and-krankenbau-hospital-courtyard-CBFN3W.jpg)
Door into Block 21, Chirurgishche (Surgery) and Krankenbau (hospital courtyard) at Auschwitz I Nazi concentration camp Stock Photo - Alamy
![Holocaust Memorial Auschwitz - Birkenau - Poland Editorial Stock Photo - Image of german, prison: 107750128 Holocaust Memorial Auschwitz - Birkenau - Poland Editorial Stock Photo - Image of german, prison: 107750128](https://thumbs.dreamstime.com/b/holocaust-memorial-auschwitz-birkenau-poland-krakow-august-laboratory-medical-experiments-nazi-extermination-camp-107750128.jpg)
Holocaust Memorial Auschwitz - Birkenau - Poland Editorial Stock Photo - Image of german, prison: 107750128
![Chronicles of Terror”. Base of testimonies of the Witold Pilecki Institute of Solidarity and Valor - Kuryłowicz Adam Chronicles of Terror”. Base of testimonies of the Witold Pilecki Institute of Solidarity and Valor - Kuryłowicz Adam](https://www.zapisyterroru.pl/Content/1216/Kury%C5%82owicz%20Adam%20PIC_1-A-587_new.jpg)