In the early medieval Armenian architecture there were developed not only ecclesiastical building types but secular ones as well. Such are the palatine complexes, the main consisting parts of which are the halls of columns having 3 or 4 pairs of pillars at the center.
   First instances of the indicated halls are met in the capital Dvin as the Crown-Hall of Arshakid kings at the palace on the top of the citadel, as well as in the Catholic palace at the down town near the Cathedral of St. Gregory.
   The same architectural features are notable at the palatine complexes in the central part of Dvin and Aruch. Both of them have three pairs of columns at the center. By the same properties with slight differences it could be described the Catholic palace at Zvartnots church complex. Actually there are certain generalities in the architecture of the mentioned halls, they are: the shafts, the capitals, and the bases of the columns built up of stone and the gabled roofs. Identical are the distances between the columns, the forms and dimensions of the capitals, the garret windows of the roofs, etc. This all signified an important phase of early medieval Armenian architecture as a transition period from timber to stone technique of building tradition derived from popular sources.