During nine hundred (!) days a few million people city of Leningrad suffered from cold and hunger, being deprived of almost all supplies of food and fuel. Many thousands died, those who survived remember this not very willingly. The situation with food was so heavy, no food was sold/distributed among people except a few grams (not even tens or hundred grams) of bread, and not each day, that people had to eat stuff that they would never eat in normal life, like making soups of leather boots (because leather is of animal origin) or boiling the wallpaper because the glue with which they were attached to walls contained a bit of organic stuff. Of course many occasions of cannibalism occurred.
On those photos you can see some pieces of those old photos made during those black days overlaid to the modern city views, respecting the place and angle of view.
(Click to Enlarge)
made by Segei Larenkov