while WW2 left a lot of munitions around that did not explode as well as some impressive architecture WW1 left its mark on France with Zone Rouge which was cons

while WW2 left a lot of munitions around that did not explode as well as some impressive architecture WW1 left its mark on France with Zone Rouge which was considered too costly and too dangerous to clean up. The issue in this case wasn't just explosive ordinance but chemical weapons. https://en.wikipedia.org/wiki/Zone_Rouge https://en.wikipedia.org/wiki/Zone_Rouge