The research tackled Mosul through Athar al Bilad Wa 'Akhbar al Ibad by Zakariah bin Muhammed bin Mohmoud Al Qazweeni. Al-Qazweeni men tionedmuch important geographical historical information about Mosul for he visited it. He told about its architecture , its climate , its religious sites , and economical social sides besides telling about its people and some of its columns. In this research the subject of the book has been reviewed and compared with a number of historians and geographers like Ibn Hauqel , Al Maqdisi , Yaqout al Hamawi and others. It has been noticed through that comparison that Al Qazweeni was distincctive in telling some narratives. Besides , some of the narratives have been similar to what have been told by the other historians and geographers.