The Cairo Trilogy (Arabic: الثلاثية‎ (The Trilogy) or ثلاثية القاهرة (The Cairo Trilogy)) is a trilogy of novels written by the Egyptian novelist and Nobel Prize winner Naguib Mahfouz, and one of the prime works of his literary career that the Nobel committee cited as justification for his being awarded the prize.The three novels are, in order: Palace Walk (original Arabic title: بين القصرين, Bayn al-Qasrayn, first Arabic publication 1956) Palace of Desire ( قصر الشوق, Qasr al-Shawq, 1957) Sugar Street ( السكرية, Al-Sukkariyya, 1957)