Ahvaz was one of the main cities of Khuzestan during the Sassanid era and was one of the main centers of Khuzestan’s textile industry and one of the centers of Christianity in Iran. In addition, the city is one of the main centers of commerce and, due to its location along the Karun River – which has the ability to navigate – is a good place for commerce.

The city of Ahvaz in the early centuries of Islam was considered one of the largest and most prosperous cities in Khuzestan due to the dam that was closed on Karun River. Ahvaz is one of the most important cities in Iran due to its oil wealth and is the fourth richest oil city in Iran with 37 billion barrels of oil reserves.

Another most important historical city of Iran which is located in Khuzestan is the city of Susa with a history of 6000 years. Susa is one of the earliest human civilizations, this city was chosen as the capital of the Achaemenid dynasty in five hundred years BC and was considered an important city in human history before Arab invasion of Iran.