Main post with useful information and my impressions of the visit concentration camps Auschwitz, I already wrote. Here, on the contrary, there will be only photographs from the Auschwitz I concentration camp. It is not recommended to look impressively, but on the other hand, how else ....
Let me remind you that Auschwitz is a Polish city, which the Germans called Auschwitz during the war. It houses a complex of two concentration camps Auschwitz I and Auschwitz II, located a couple of kilometers from each other (visited separately). Photos from the Auschwitz II camp you can also see the link.
Auschwitz 1 was built in 1940 on the basis of former barracks, so those who got here were somewhat more fortunate than those who ended up in the Auschwitz-Birkenau extermination camp (Auschwitz 2). Here the barracks are more solid, brick, two-story, with more or less decent heating..
Barracks, or more correctly blocks, stand in 3 rows. The first row is mostly closed to the public, the second row is the exposition of different countries, the third row is the reconstruction of various rooms (or maybe the reconstruction of the whole block is direct). By the way, I looked at the exposition of Russia, Poland, Slovakia, Israel and some other country, and in my opinion, the Russian exposition was the best among them. There are old documents, and things, and a lot of photographs (in electronic form on screens), and the projector was rich. The rest are quite simple.
At Auschwitz 1 there was one crematorium converted from a vegetable store. After testing the Zyklon B gas on humans, the building was redesigned and a gas chamber appeared in it. The cell functioned from 41 to 42, and after that it was converted into a bomb shelter. Everything is now reconstructed from original parts..
It is not necessary to go to country expositions, I think all this (or a lot) can be found on the Internet. Much more interesting (so to speak, because «interesting» not quite an appropriate word in this case) the third row of blocks. They store the belongings of prisoners, and also there you can see with your own eyes the conditions in which people lived and died ... In particular, block 10 and 11 - death row. There are cameras, both ordinary and standing, a wall near which people were shot, premises for various purposes..