It is a scenic place to visit. The main church structure is pretty large, however the majority of the interior is dedicated to uses other than worship and the area you enter is much smaller than the size of the entire complex. It is a traditional Armenian design with a belfry and a number of rotundas. Most of the exterior is plain until you make it around to the entrance which is intricately carved and very beautiful.
This structure contains numerous cool paintings, souvenirs, religious artifacts, and illuminated manuscripts so insist on seeing it. Another secret is a fire pit beneath the altar. This is where pagans worshipped fire before Christianity. It is in the small museum in the main cathedral, with the entrance to the right of the altar.