The ancient ruined castle with newer walls dating from around 814 AD on the rocky promontory at the south side of town. A lone column is just about all that remains of the older structure but the views are spectacular. Almost mystical crimson and hazy sights from the terrace at the entrance of the castle over the old city during the evening call to prayer is hard to beat and well worth the effort the climb there, even if the grounds of the castle is closed already. 09:00-17:00. 3 TL