The Armenian pagan Temple of Garni, probably built 1st century AD, is the only "Greco-Roman colonnaded building" in Armenia and the entire former Soviet Union.[41]
Religion in ancient Armenia was historically related to a set of beliefs which, in Persia, led to the emergence of Zoroastrianism. It particularly focused on the worship of Mihr (Avestan Mithra) and also included a pantheon of native Aryan gods, such as Aramazd, Vahagn, Anahit, and Astghik. The country used the solar Hayk Armenian calendar, which consisted of 12 months.