Aruch Cathedral is located in the same name village in Aragatsotn Region, in one of the oldest settlements in Armenia. The place is first mentioned as early as the 5th century as the winter residence of the king’s army. In the 7th century, Aruch was the capital city of Armenia under the reign of the Duke Grigor Mamikonyan.

Aruch Cathedral is one of the treasures of the Armenian medieval architecture (60-70’s of the 7th century). It belongs to the "domed hall" type of churches. Inside the big church’s (17,0x34,6) praying hall, by the longitudinal walls, over the two arches connecting the pillars, the dome with its drum raised (now destroyed). The windows are decorated with beautifully ornamented arches, the cornices are carved as if they are woven like those in Zvartnots.