Thoughts for you:
1, What does it mean for a city that experiences mass destructive? Its citizens? Its landscape? Its built environment?
2, What happens when an outside expert approaches the place of destruction? When the outside expert imposes ideas for damage mitigation? Rebuilding of place? Of form?
3, What happens when physical triggers to memories are lost? Does it differ when it is a man-made destruction as compared to a natural disaster? Does natural disaster still exist?