Sorry for that click-baity headline, it was too goofy to resist. But this genuinely is a little trick to tell, strangely rapidly, where a photo was taken! Well, only if that "where" is South Africa (from, oh, the 50s to the 90s) and if that photo has cars in it. Still! There's got to be someone out there for whom this is useful.
I first noticed this searching for strange, exotic non-German Volkswagens. Some of the strangest ones were from South Africa, and there's a little detail in some of these pictures you might notice: tiny white round reflectors on the front fenders.