The village experienced prosperity in the second half of the 10th century when the lands of Bjni were passed to the Pahlavuni family as a fiefdom. Bjni Citadel was built by Vasak Pahlavuni, which became the bishop’s residency.

The Church of Saint Astvatsatsin was built by Gregory Magistros, the son of Vasak Pahlavuni. After the Byzantine and Turkish devastations (11th -12thC.), Bjni saw its second economic and cultural heyday.

In the 13th C., the settlement received its town charter. Still today, natural carbonated mineral water is filled into bottles and sold throughout the whole country.