The Southern Cemetery is located south of the Citadel near the Muqattam Hills. It is the site for various sites of Fatimid patronage in the form of mausolea like that of the 'Alid Saints and the Qubba al-Sultaniyya of the 1360s.
Source:
Jarrar, Sabri, András Riedlmayer, and Jeffrey B. Spurr. Resources for the Study of Islamic Architecture. Cambridge, MA: Aga Khan Program for Islamic Architecture, 1994.