Among his bestselling books at the Riyadh fair were "Bayn Al-Qasrayn
" aka The Palace Walk; "The Harafish"; "Awlad Haretna" aka Children of Gebelawi; "Tharthra Fawq el-Nile" aka Chitchat on the Nile.
The Qalawun complex built by Sultan Al-Nasir Muhammad Ibn Qalawun in 1284-85 A.D in the Bayn al-Qasrayn
quarter in the heart of Cairo which included a hospital, a madrasa, and a mausoleum was once the most lavish and impressive hospital of its time and functioned throughout the late Ottoman period, and demolished in 1910.
One novel was republished in 1953, however, and the appearance of the Cairo Trilogy Bayn al-Qasrayn
(Between the two palaces), Qasr al-Shawq (Palace of Longing), and Sukkariya (Sugar bowl) in 1957, made him famous throughout the Arab world as a depicter of traditional urban life.
There are a hundred and twenty pages alone on the famous Fatimid palaces that once lay facing each other flanking the Bayn al-Qasrayn
at the heart of the imperial city.
Mahfouz' early novels, such as Radubis (1943; "Radobis"), were historical fiction, but he had turned to describing modern Egyptian society by the time he began his major work, Al-Thulathiyya (1956-57), known as "The Cairo Trilogy." Its three novels--individually titled with the street names Bayn al-Qasrayn
( Palace Walk), Qasr al-Shawq (Palace of Desire), and Al-Sukkari-yah (Sukkariyah )--depict the lives of three generations in Cairo from World War I until after the overthrow of King Farouk I.