Kingdom of Armenia (antiquity)
Until the late Parthian period, Armenia was a predominantly Zoroastrian-adhering land. With the advent of Christianity, both paganism and Zoroastrianism gradually started to diminish. The founder of the Arsacid branch in Armenia, Tiridates I was a Zoroastrian priest or magus. A noted episode which illustrates the observance by the Armenian Arsacids is the famous journey of Tiridates I to Rome in A.D. 65–66. With the adoption of Christianity in the early 4th century, Zoroastrianism's influence in the kingdom gradually started to decline.