Sobibor extermination camp
The Nazis were constantly expanding and renovating Sobibor. After only a few months, the wooden walls of the camp's gas chambers had absorbed too much sweat, urine, blood, and excrement to be cleanable. Thus, the gas chambers were demolished in the summer of 1942, and new larger ones were built made out of brick. Later that summer, the SS also started a beautification project to make parts of the camp look nicer. They built new structures and landscaped part of the camp to make it look like a village in Tyrol, Austria. When Sobibor ceased operations in mid-1943, the SS were part way through the construction of a munitions depot known as Lager IV.