Quote Originally Posted by NightStar
Yes, only one grand mosque at a time, there was a bug that if you started production of multiple grand mosques at the same time you would get them all, but this bug was ironed out in one of the patches. So I reccomend you just find a place that makes only JHI...
IIRC this does not work for VI. You would have to tear down and rebuilt in order to get multiple MAs in VI.