This chapter discusses Marcus Simaika's work as a member of the Committee for the Preservation of Arab Art (Comité de conservation des monuments de l'art arabe). The Comité was founded in 1881 by Khedive Tewfik, son and successor of Ismaʻil Pasha. Long before joining it in 1905, Simaika had been in constant communication with, and was a very good friend to, Max Herz Pasha, a Hungarian Jew who worked under Julius Franz Pasha, the architect who directed the technical office of the Waqfs (Endowments) Administration and was a driving force in the Comité until his retirement in 1887. The chapter provides an overview of the Comité's activities, including the restoration of ancient Coptic churches.