The Sultanhani outside of Kayseri was commissioned in 1232 by Alaeddin Keykubad I. It is the second largest Seljuk caravanserai in Turkey, encompassing 3,900 square meters. As a fortified way station along the trade route, it is built of massive stone walls with only one entrance. This entrance is set in the thick wall of the caravanserai below a muqarnas niche. From the entrance one passes through the thickness of the walls into the courtyard, in the middle of which is a masjid. The masjid is set on arches above a fountain, with the prayer hall on the second floor, reached by a double stairway. The arches of the masjid are decorated with intertwined serpents, and geometric carving covers all the exterior corners. Animal motifs are common...