 The interior was ruined over time and little remains of the original structure other than the bare walls of the main halls, although it has recently been repaired and restored.Aside from the vestibule at the entrance, the interior is dominated by a rectangular central courtyard surrounded on four sides by iwans (chambers open on one side) that open though massive pointed arches framed by a band of carved stone (as mentioned above) resembling linked chains.The outer walls of the southwestern and northeastern iwans are distinguished by an unusually extensive arrangement of windows