The township of Shoosh is located to the northwest of the province, and has common borders with the Ilam province. Its center is the city of Shoosh which is at a distance of 1,010 km. from Tehran. It experiences a hot climate. Susa is considered to be one of the oldest centers of civilization throughout the globe. In archeological excavations, relics related to the pre-historic era have been discovered here.
The Elamites were the first clans who were responsible for its flourishment. During this reign Susa was proclaimed as a capital. Even after the Achaemenians gained control over Susa, the latter sustained its splendor and was selected as the winter capital by Dariush the Achaemenide. Till the beginning of the control by the moslems, Shoosh continued to thrive. In the year 1898 AD, the famous castle of Shoosh was constructed by "Morgan" on the northern part of the Acropol hill. The ancient name of Shoosh was 'Soos' or 'Dasht-e-Soosiana', and later on was changed to Shoosh.