This study aims "to mix the city of Mosul during the Islamic ages 16-660 AH / 637-1261 AD to inflict a gap in one of the aspects of the urban city by delving into the study of what is evident from the ruins and extinct, and linking it to history to verify the identity of what was added by each era in which the city lived in urbanization. During its Islamic eras, and accordingly, as long as the period of research came in those ages, it was appropriate to the spirit of Islam and the experiences of the Arabs in building and construction, and the nature of the topic necessitated dividing it into five chapters in addition to the introduction, the conclusion and the introduction at the beginning of the thesis. The preface dealt with a brief overview of the history of the city through the ages. In the first chapter, "Buildings and defensive elements", she deals with the means of fortifying the city from castles, forts, and the bracelet, and in the second chapter, "the city neighborhoods and their residential shops," he devotes the study and describes the shops and neighborhoods, and in the third chapter, "Religious and scientific buildings," the most prominent houses, mosques, churches and shrines are presented. And schools, linking, and in the fourth chapter, administrative and residential buildings, "clarifying and studying the aforementioned roles, palaces and administrative buildings. As for the last chapter, fifth, service projects and buildings, "it revolved around the use of the rivers role in serving the economic and social life, as well as the markets and their inns, hotels and shops. The search ended with a sleeper of valuable results and resources.