The Kızıl Kule (Red Tower) is a high brick building, standing at the harbor below the castle, and containing the municipal ethnographic museum. Sultan Kayqubad I brought the architect Ebu Ali from Aleppo, Syria to Alanya to design the building. The last of Alanya Castle's , the octagonal structure specifically protected the Tersane (dockyard), it remains one of the finest examples of medieval military architecture. The Tersane, a medieval drydock built by the Seljuk Turks in 1221, is divided into five vaulted bays with equilateral pointed arches. The Alara Castle and caravanserai near Manavgat, also built under Kayqubad's authority, has been converted into a museum and heritage center.