The exact date of the foundation of Sanahin is unknown. Surb Astvatsatsin church is the oldest in the complex( 928-944). The main church of Sanahin complex is Amenaprkich built by Queen Khosrovanuish. Surb Grigor church (X century), churches of Surb Karapet (X-XI century), Sargis chapel (XII-XIII century), three domes, belfry, library and academy are the other parts of the complex. Sanahin played an important role in educational and cultural life of medieval Armenia. It was included in UNESCO’s World Heritage List in 1999.