Image of the stairways and doors decorated with muqarnas in the courtyard of 13th-century Seljuk caravanserai, Sultan Han, Aksaray, located in the town of Sultanhanı, Aksaray, Turkey. One of the hallmarks of Anatolian Seljuk architecture, it was built during the reign of the Seljuk sultan Kayqubad I by the Syrian architect Muhammad ibn Khalwan al-Dimashqi in 1229. Encompassing 3,900 square meters, as a fortified way station along the trade route, it was built of massive stone walls with only one entrance.135 film (36×24 mm