famous complex of etchmiadzin housing an educational seminary and supreme catholicos of all armenians and a monastery in

famous complex etchmiadzin housing an educational seminary supreme catholicos all armenians monastery vagharshapat open air altar religion armenia architecture travel church cathedral old landmark building tourism orthodox stone holy gate ancient christian historic medieval temple armenian culture echmiadzin religious apostolic exterior heritage beautiful city view yerevan cross saint sculpture outdoor mother memorial scene worship house unesco monument statue large