The architectural type of four - columned cross - domed churches with a trifolium of outer walls is found in all East Christian regions : 7ih - century Armenia ( Dvin and T ' alin ) , various 10th - and 11th - century Bagratid kingdoms — Taik ' or Tao ( Oshk - vank or Oshki ) , the Abkhazian - Georgian kingdom ( Kutaisi ) , and Kacheti