looks similar to the tower from Gary Chalk and Joe Dever's collection which appeared in White Dwarf 53, 8 issues later
I would have happily had a go at building something similar if time allowed (maybe I will in the future) but in the meantime, to fit in with the other Hovels cottages I am using I have decided to use this piece
from the hovels European range. It will be on top of a hill to make it a bit more imposing, and has quite a wizardy feel about it. I can imagine to good Polias, beavering away in his study on the top floor, little knowing the fate that awaits him at the hands of the thief Foro Malas.