Tabriz is the fourth largest city and one of the historical capitals of Iran and the capital of East Azerbaijan Province. The estimated population of the city is around 3,000,000; the fifth most populous city in Iran.
With a rich history, Tabriz contains many historical monuments, but repeated devastating earthquakes and several invasions during frequent wars have substantially damaged many of them. Many monuments in the city date back to the Ilkhanid, Safavid, and Qajar periods,among them is the large Tabriz Historic Bazaar Complex which is inscribed as a World Heritage Site in 2010. The oldest signs of the civilization in the city is an excavation site and museum in the city center with a history that dates back 2500 years.
Source: Wikipedia | Tabriz
The other Iran 