Interesting! Some of these are clearly spelling things - I know the existence of Tegucigalpa but I can never remember how to spell it. To me it looks like Tecugigalpa, or Tegugicalpa, or something else entirely.
I also bet Bloemfontein is one of the least-guessed, although I suppose we have no way of knowing
Nice idea though, surprisingly tricky.
I also bet Bloemfontein is one of the least-guessed, although I suppose we have no way of knowing