Turkish-origin Mamlūk rulers in Egypt carried out grand construction projects in the late medieval period, including the complex (beg. 1356) of sultan al-Nāṣir Ḥasan ibn Muḥammad ibn Qalāwūn (or sultan Ḥasan, 1335Qalāwūn (or sultan Ḥasan, -1361Qalāwūn (or sultan Ḥasan, , r. 1347Qalāwūn (or sultan Ḥasan, -1351Qalāwūn (or sultan Ḥasan, and 1354Qalāwūn (or sultan Ḥasan, -1361 in Cairo. This article analyzes the symbolism and meaning of a pair of pilasters pillaged from a Levantine Christian crusader monument and set into the portal of sultan Ḥasan's complex: one with relief floral decorations, and the other with relief panels representing Jerusalem buildings. Scrutinizing the reuse of these items provides insight into the meanings and functions of the pilasters: as spolia, or pillaged architectural elements that are symbols of power and beauty; as apotropaic objects in the age of the Black Death; as signs of local Muslim-Christian conflict; and as evidence of the Mamlūk interest in the holy city for political and religious reasons. All of these elements demonstrate the strategic choices made by sultan Ḥasan to assert his legitimacy and express his religious authority through his magnificent complex.