The ruins of the Saljuq Palace (11th century) are situated in the centre of the citadel in the northeastern part of Sultan Kala. The site is known as the Shahryar Ark and it was constructed around 1080. The palace was probably later used by Sultan Sanjar. The relatively small building measuring 45 m by 39 m had single-storey rooms surrounding a central courtyard with four axial iwans (monumental gates). Low areas nearby indicate the existence of a large garden with an artificial lake.