Dvin was a large commercial city and the capital of early medieval Armenia. It was situated north of the previous ancient capital of Armeā¦Dvin was a large commercial city and the capital of early medieval Armenia. It was situated north of the previous ancient capital of Armenia, the city of Artaxata, along the banks of the Metsamor River, 35 km to the south of modern Yerevan. It is claimed it was one of the largest cities east of Constantinople prior to its destruction by the Mongols in the 13th century, but with an overall area of approximately 1 km, it was far smaller than many of the great cities of Asia. It had an estimated population of 45,000 in 361, 47,000 in 622, and around 100,000 at its height in the 8th-9th centuries. Nyura Hakobyan proposed a peak population of 100,000 to 150,000.