This museum is situated on the hill formerly known as Arin-Berd, the site of the ruins of the fortress-city Erebuni founded by Argishti 1 son of Menua, king of Urartu in the year 782 B.C. The museum was officially opened to the public in 1968, which was the 2750 th anniversary of the founding of Erebuni. The city of Yerevan traces its birth to the same date. Yerevan got its birth-certificate given by the King Argishti, which has been preserved till nowadays.