Holy Mother of God Katoghike Church of Avan - Credit: Wikimedia Commons
Holy Mother of God Cathedral of Avan (; 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. Read more on Wikipedia
Source: en.wikipedia.org