In one flat I rented in Warszawa ( furnished) there was a brilliant book of b &w pics of Warszawa 1945 ( probably published in the 50s) taken by some bloke who had held onto a stock of film. The images of the Old Town were particularly interesting....it was rebuilt using amongst other things Canaletto pictures, so it looks pretty much pre WWII...to see the extent of the original devastation was quite eye-opening. I was very tempted to nick it - against my nature - sometimes wish I had as I suspect it is pretty rare now. I know the Ghetto..Muranow...today the flats they built on top of the remains are in very bad condition due to subsidence as they weren't too careful about grading down the rubble and the human remains. Attached self-taken pic of the ghetto area.
Actually there's a bit more to it. Whilst the Germans were systematically demolition-charging all kinds of buildings, the Ghetto, several palaces and Warszawa Castle ( later rebuilt entirely with privately donated money and labour), the Red Army was camped on the other side of the Vistula watching them and letting them get on with it on Stalin's orders...this was revenge for a war between Russia and Poland in 1920...which the Russians lost.