Oblique aerial view of part of the devastated Walle district of Bremen, looking south-east towards the Altstadt. Note the large, undamaged, public air-raid shelter (Luftschutzbunker), standing on Zwinglistrasse in the foreground. Between the nights of May 17-18, 1940 and April 22-23, 1945, Bomber Command dropped over 12,800 tons of bombs on the city
