Cathedral of Avan
Holy Mother of God Cathedral of Avan (Armenian: Ավանի Սուրբ Աստվածածին Կաթողիկե Եկեղեցի, romanized: Avani Surb Astvatsatsin Kat’oghike Yekeghets’i; also known as the church of Katoghike Tsiranavor, later renamed Surp Hovhannes) is a ruined 6th-century church located in the Avan District of Yerevan, the capital of Armenia. It is the oldest surviving church inside Yerevan's city limits.