George R. R. Martin’s A Song of Ice and Fire series has no dearth of fans and followers. A fan going by the name of serMountainGoat studied laboriously through the pages of the text to make this map that could be called the most detailed map of Westeros till date.
Considering that all geogaphic details haven’t quite made it to the books, many parts of the map happen to be speculations; educated guesses, if you will. Yet it is quite easily one of the most impressive and well detailed maps out there, good enough to even impress R. R. Martin.
The author mentions that the map isn’t exactly accurate because the geography of all the places hasn’t quite been laid out, but does mention that the map comes pretty close to the real deal.