Really interesting! Very nicely done! I can imagine walking around in the streets.

One thing to consider, I think that fortress would want a "killing field" around its wall. With houses and buildings around it that close, archers aren't going to be able to defend against attackers, and attackers will simply be able to climb over the walls. If it were my map, I would remove those two closest rings of buildings around the wall.

Keep it up and keep us updated!