Hamedan In Old Persian was called Hagmetana, Ecbatana. It is an ancient city with a population of 473,149 (according to 2006 census). It is 1,850 meters above sea level. Hamadan is believed to be among the oldest Iranian cities and one of the oldest in the world. It is possible that it was occupied by the Assyrians in 1100 BC; the Ancient Greek historian, Herodotus, states that Hamadan was established by the Medes and was the capital of the Median Empire around 700 BC.
In the Parthian era, Ctesiphon was the capital of the country, and Hamadan was the summer capital and residence of the Parthian rulers. After the Parthian, the Sassanid constructed their summer palaces in Hamadan. It then became one of several capital cities of the Achaemenid Dynasty. The city is known for its walnut, rug and pottery industry.