Since the earliest documented history of Tabriz, it has been chosen as the capital for several rulers commencing from Atropates era and his dynasty. It is likely the city has been destroyed multiple times either by natural disasters or by the invading armies. The earliest elements of the present Tabriz are claimed to be built either at the time of the early Sassanids in the 3rd or 4th century AD, or later in the 7th century. The city used to be called "T'awrēš" in Middle Persian.