Confused as it would be the same area of the town. Nations don't own property themselves. Also like nations don't have to be in an area perse. If your getting the you don't have influence here message trying to siege there are 2 possibilities. The town you are sieging is neutral or in some other way not siegeable like and immunity or in an allied nation or the other option is your town is neutral and you can't siege anyone. I own horizon and we have towns all over the map.