This 5th century basilica has undergone no major alterations, except the rebuilding, in ancient times, of the western gallery. A three-nave structure lying on a six-stepped stylobate, the composition of the temple represents the next step from more ancient and simpler buildings. Its exterior walls are intact along the whole perimeter, almost as high as the cornice. The southern fasade of Yereruyk Church, with two large, thoroughly elaborated porticoes, is of interest. Colonnades which used to stretch all along the southern, northern and western facades of the building no longer exist. The ceiling of the central nave may have been woodwork and the roofing of the vaulted side-naves stonework.