 The round cupola drum was destroyed by earthquake in 1927 (also rebuilt in by 2000), and is decorated with a 12-arch arcature.The front wall of the altar has carved khachkar-type crosses, and there are rosettes on the walls and on the spherical pendentives of the cupola where they alternate with flat arch motives.The gavit, built in the second half of the 12th century and attached to the western facade of S. Grigor church, is an early structure of this type.