This paper refers to a few observations on historic preservation in Morocco under the French protectorate through the legal system of cultural property preservation. After the Fes treaty, Lyautey began to protect the ancient monuments of Moroccan history and of the traditional architecture. In 1912, he established the “Service des Beaux-Arts et des Monuments Historiques”. Drawing upon the existing French laws, Lyautey also made some laws for the preservation of cultural properties, which included not only monuments but also areas or zones. The meshing of cultural property preservation with city planning became the cornerstone of his urban policy, which was carried over even after he left. He played a key role in the historic preservation in Morocco.