Bishapour in Islamic era

According to the studies conducted, it seems that after the demise of the Sassanian Empire, construction of Bishapur continued following the Sassanian standards but with minor changes. It seems that Islamic settlement traces of the site were manifested by an increasing extension of residential neighborhood into the city center. Also the uninhabited southern and western parts of the city became residential in Islamic times. Some Islamic era buildings of the city have been identified; among them a madrasah and a mosque are more noteworthy. Apparently from the tenth century AD onwards, the Islamic City of Bishpur began to lose its prosperity; as a result Ebn-e Balkhi has mentioned it as a ruined city in the 12^th century AD.