If anything, we could see Kutna Hora (Kuttenberg), which is about 30 kilometers north-east from Talmberg. It was in its times almost as big as the Prague towns, and in 1403 still a considerable habitation and a commercial hub.
That’d be exciting of course but hardly doable when you think about the amount of NPCs etc.
Another two locations which are nearby are a seizable town Divisov, and a fantastic castle Sternberg by the Sasau river. I do have my private suspicion (or at least a wet dream) that the Sternberg castle has made it to KCD and will be one of the surprises awaiting us (no info or hints to back my suspicion sadly. It’s just too close to our location for Warhorse completely to overlook).