From the blog "Random thoughts and ideas on Skyrim mods"

Years of modding have left us with many occupied locations on a much too small map of Skyrim.   Big question is always: WHERE CAN I PLACE MY NEW MOD?   So, let's start with what I know myself. I created a quick scratchmap with locations that are occupied by mods of my current game. I will post probably more cities as I stumble upon them. But for sure I will update this article and replace the map with a better one!   Part 1: Whiterun   Red