Dominating the city centre, this burly fortress was built in the early Zand period and formed part of the royal court that Karim Khan had hoped would develop to rival Esfahan. The high walls feature ornamental brickwork and are punctuated by four attractive 14m-high circular towers. The southeastern tower has a noticeable lean, having subsided onto the underground cistern that served as the Arg’s bathhouse.
Inside the Arg is a large, open courtyard filled with citrus trees and a pool. A dusty museum of the Zand period, with wax figures in traditional dress, occupies rooms off the northwest iwan.
Source: Lonely Planet