I wouldnt bother with a Roman one, since there is a Greek one.
As for Celtic, i know nothing about their architecture. So maybe if you provide good pics i will think of making it. At the time being i was planning a Norse set
Edit: In fact i would rather make a celtic one, since i understand they have stone buildings. I would like the continuity of that, since in an norse set i would have had to use wooden textures...
As for Celtic, i know nothing about their architecture. So maybe if you provide good pics i will think of making it. At the time being i was planning a Norse set

Edit: In fact i would rather make a celtic one, since i understand they have stone buildings. I would like the continuity of that, since in an norse set i would have had to use wooden textures...