This research is arranged in seven chapters, grouped in four parts. The methodology followed in each chapter is explained in its separate introduction. Part one: History of conservation in Cairo, is divided in two chapters. The Napoleonic Expedition to Egypt in 1798AD is used as a symbol for the changes that happened in attitudes. Chapter 1 tackles Pre-Napoleon attitudes, whereas Chapter 2 tackles Post-Napoleon attitude. Methodology used in the two chapters is totally different: The absence of any previous study on attitudes in Pre-Napoleon Cairo, made it necessary to use a method of analysis and observations on certain buildings in order to extract attitudes of the time. Whereas Chapter 2 is a mere collection of observations and writings on Post-Napoleon attitudes. Part two: Different aspects of conservation, is divided in three chapters. Chapter 3, ideological and cultural aspects, discusses the influence of the ideology of Islam and the cultural characteristics of Arabic on attitudes. This chapter is inherently controversial, as it tackles the heart of Speiser's question. And unavoidably it challenges a well established branch of Western academia. Orientalism. Chapter 4, Social, economic and cultural aspects, addresses the particular development/conservation attitudes, problems, and possibilities in Cairo. The main approach of this chapter is to learn from the informal sector how to survive through hardships. Chapter 5, Technical aspects, reviews problems of Cairo on different scales without losing sight of other aspects of conservation, which do affect attitudes. Part three, Attitudes to architectural conservation, consists of one chapter. Chapter 6, Range of possible attitudes, acknowledges the wide range of possible attitudes. A study trip to Cairo, Damascus, Lahore, and San'a' made it possible to meet theoretically possible attitudes with actual existing attitudes. The collection of theoretically possible attitudes, is the result of previous conservation education and experience, as well as the heated discussions with Tony Vogt, lecturers, and students at the Mackintosh School of Architecture. Part four, Case study consists also of one chapter. Chapter 7, The mosque of Ulmas, brings together the findings of the present research in a practical way. It proposes a new approach to the conservation of Ulmas mosque. The proposal is essentially open-ended project which has to be finalised during the course of its application, so that it leaves room for local attitudes to participate. The conclusions highlight the strong and weak points of the research, and summarises its findings.