Milau has tracked down the filming location for the Avalon branch. He writes:-
After searching for movie locations and specifically for Ash’s branch location, I found it through sheer luck. In the documentary “Making of Avalon” I noticed a small monument in the background (KRYBAR – an anti-fascist movement during WW2) while the team was preparing for the scene shoots and I managed to reverse-find the exact location! Enjoy:
Tamka 36, Warsaw, Poland