If you divided the Earth into plots of (say) 1 square mile each, and looked at the history of each one over (e.g.) the last 2000 years, which one would have seen the most years with war? If there is a methodological way to answer this, that would be cool. If not, educated opinions would also be interesting. Where would you look for evidence?
EDIT for clarity:
To be more exact: For each square mile, for each year, give a "Yes" if that plot of land had warfare on it and a "No" if it did not.
Of all the plots of land, which one had the most "Yes"s?
So, e.g., the square mile where I live (New York City, but upper west side) might have only a few "Yes"s or even none - I am not sure if any battle of the American Revolution was fought near here and I am also not sure if any war amongst native American tribes was fought here.