Аршакиды
During the Arsacid Dynasty of the Kingdom of Armenia, it served as the main town of Ayrarat province and the capital of its Aragatsotn canton from which the Amatuni noble family ruled. However, Oshakan is best known for the Saint Mesrop Mashtots Church which is the burial place of Saint Mesrop Mashtots, the creator of the Armenian alphabet. The church houses his grave and was rebuilt by Catholicos George IV in 1875. Wall paintings on the interior were done in 1960 by the artist H. Minasian. Saint Mesrop Cathedral is the seat of the Aragatsotn Diocese of the Armenian Apostolic Church.