This is the Cathedral of the Holy Mother, in my old stomping grounds of Gyumri, Armenia. Everyone called it Yot Verk (Յոթ Վերք) when I lived there. It is located at one end of the huge main square that makes up the heart of the city. There were only a few large buildings left (at least when I was there), this cathedral being one of them.A friend of mine got married in it and when you leave the building you are not suppose to turn your back on the center hall so we are had to slowly shuffle out walking backwards, trying not to trip.