For just £4 from the local flea market I picked up four rather splendid middle eastern buildings:
Three of them are marked with the logo of the Yemeni national airline and the gateway on the right is marked Bab-al-Yemen (approx scale 1/200th). I guess they are all famous buildings in Yemen. Sheffield has a large Yemeni community so it's not that odd a find.
I reckon these buildings could work in either 1/300th or 6mm scales. I'll have to do some Google image searches of Sanaa.