Maar-Sargiz Historical Church (Marserkis, Marsarkis Church, Sir Church) is located on the hillside of Ser/Sir Mountain (12 km West of the city of Orumiyeh / Urmia) and the village is located in the foothills of the same name. This church was built under the orders of Shirin (the wife of the Sassanian ruler Khosrow Parviz), who was a Christian follower.