Mount Ararat with the historic Khor Virap monastery visible at center-left

First Christian Nation

Built between 301 and 303 AD by Saint Gregory the Illuminator on orders from King Tiridates III, Etchmiadzin Cathedral is widely regarded as the world's oldest cathedral still in active use. The current core dates to a 483 AD rebuild by Vahan Mamikonian, but archaeological excavations have confirmed continuous Christian use of the site since the early 4th century.

Source

Illuminate
Armenia

Builtย betweenย 301ย andย 303ย ADย byย Saintย Gregoryย theย Illuminatorย onย ordersย fromย Kingย Tiridatesย III,ย Etchmiadzinย Cathedralย isย widelyย regardedย asย theย world'sย oldestย cathedralย stillย inย activeย use.ย Theย currentย coreย datesย toย aย 483ย ADย rebuildย byย Vahanย Mamikonian,ย butย archaeologicalย excavationsย haveย confirmedย continuousย Christianย useย ofย theย siteย sinceย theย earlyย 4thย century.ย 

1128First Christian Nation