He had it built here.
Turn fictional modern-day nation into realistic wall hanging map
I saw this on wired a bit ago (they have a Map Room area now) where this guy used Adobe illustrator to map is fictional world. I thought I was good until i looked at this. (btw.. this is the type of mapping i do, but hand-drawn)
You Won't Believe How Insanely Detailed This Guy's Fictional Maps Are. Seriously. - Wired Science