The castle has a castle wall of 6.5 km length, 140 towers, about 400 cisterns, doors with inscriptions and as an open air museum reflects Seljuk art at its best, showing the fascination of Seljuk art. The castle was built by A. Keykubat, the Sultan of Seljuk. The ramparts start from Kızkule, extend down from Ehmedek,
İçkale, Adam Atacağı, Cilvarda Burnu, Arap Evliyası Rampart and Esat Rampart and pass through Tophane and Tersane and end at Kızılkule at the starting point. The first construction the castle dates from the Hellenistic Period, but in fact the construction took its fascinating and monumental form during the Seljuk Empire. The altitude of the part called the inner castle and located at the highest place of western corner of the peninsula is about 250 meters. It was surrounded by walls from four sides as it was the centre of administrative and military organisation. Two Seljuk period cisterns made of bricks located in the middle part of the inner castle are still in good condition at present. Main buildings in the inner castle were constructed so as to lean on the castle walls, except for the western part. Sultan Keykubat has been built his palace here…The settlement in the castle continues also today. İn front of wooden and stone made houses, silk and cotton are woven, different figured calabash trees are coloured,otantic food has been served in little gardens. Further, on the road to the castle restaurant and cafes are located on the sea side. The castle road is open to vehicle traffic. You can also walk to it in circa one hour.