The Great Palaces of the Fatimid Caliphs (or Great Fatimid Palaces, among other name variants) were a vast and lavish palace complex built in the late 10th century in Cairo, Egypt, to house the Fatimid caliphs, their households, and the administration of their state. There were two main palace complexes, the Eastern and the Western Palace. They were located in the center of the walled city of Cairo around the area still known today as Bayn al-Qasrayn ("Between the Two Palaces").