Surb Khach Church is not just a place of prayer, but a well-known tourist attraction as well. Make a pilgrimage and enjoy a moment of contemplation.
You're spoiled for sightseeing choice when in Rostov-on-Don. Surb Khach Church is a great place to start here, but there are loads of other fine sights to appreciate. Theatre Square, Gagarin Children's Railway, and Rostov Arena are close to the house of prayer and will fill in your day nicely.