The Taj Palace (Arabic: قصر التاج, romanized: Qaṣr al-Tāj, lit. 'Palace of the Crown') was one of the principal caliphal palaces in Baghdad during the middle and later Abbasid Caliphate. The palace was begun by the sixteenth Abbasid caliph, al-Mu'tadid (r. 892–902), as part of the building projects begun when the capital of the Caliphate was moved back to Baghdad from Samarra. It lay on the banks of the Tigris River in southern East Baghdad, just south of the older Hasani Palace. It was thus the southernmost portion of a sprawling palace complex, the "Abode of the Caliphate" (Dār al-Khilāfat), that included the Hasani and the , also built by al-Mu'tadid, as well as gardens and minor palaces.