I started this six months ago, I didn't focus on the terrain.
If you look at the few houses I built (that he didn't include in the pictures)they are slightly more detailed than the rest.
The castle (that he didn't include in the pictures either) is alot bigger than what would fit the build and also more than half assed.
Edit again: started the first version of this build in the summer 2012, but with almost entierly flat terrain, decided to remake it 8 months ago, GoT 4 months.