There are categories for places like:
[list]BTL battlefield a site of a land battle of historical importance
HSTS historical site a place of historical importance
RUIN ruin(s) a destroyed or decayed structure which is no longer functional
PPLQ abandoned populated place
Some of these could classed as those or put as alternate names of their successor places. (Personally, I like to add the old historic names of places)
I prefer solutions that do not destroy information.