It seems to me that an easy way to make a map for your homebrew campaign area would just be to get hold of a topographical map of an area of the real world. Then you couldn't help but have a realistic map, with rivers and mountain ranges where they should be, and the work of determining climate, distances etc. is done for you. I'm fairly sure that you could simply rotate the map 90 or 180 degrees and your players would never recognise it once you had dressed it up.
Has anyone thought of this before, or tried it? I'm trying to think what would be a good land mass to try this out on - maybe Spain?
Has anyone thought of this before, or tried it? I'm trying to think what would be a good land mass to try this out on - maybe Spain?