Location, location, location.
That saying usually applies to real estate, but it apparently it works for the Oscars too. A Reddit user who goes by the name VictorVan plotted the settings for all 84 Best Picture winners between 1929 and 2013 on a map of the world (click for a bigger version):
You'll notice that there have been a lot of winners set in New York:
London does all right for itself too. Movies set in, say, Southeast Asia haven't struck as much gold:
The only winner on the map that isn't set on Earth is The Lord of the Rings: Return of the King (VictorVan places it in New Zealand, where it was filmed). Obviously, this map isn't proof that movies set in New York or London are automatically better than ones set elsewhere. But it is interesting to see which locales get more attention, and it's a way of examining which stories the Academy favors.