In 1948, police escort people past the site of an unexploded 1,000 kg bomb dropped in 1941, outside University College Hospital, London

Source

https://upload.wikimedia.org/wikipedia/en/1/1b/WWII_Unexploded_Bomb_London.jpg

https://en.wikipedia.org/wiki/File:WWII_Unexploded_Bomb_London.jpg

Still happens every week end in Brest, France