Islamic culture, which is the book (The History of the City of Peace), as its author al-Khatib al-Baghdadi called it, which was dominated by the name (The History of Baghdad) in an attempt to clarify the intimate relationship between the book and the writer. And taking care of it, and it is the book that he devoted to talk about the most beloved cities to him and the most beloved of its inhabitants, i.e. the city of Baghdad, and the people of knowledge in it. The preacher fell in love with that love, so he wrote about it and excelled, and his book was one of the best books written about Baghdad and the people of knowledge, according to the testimony of the specialists. Since this book came into existence and was circulated by the people of knowledge, it attracts their attention and obtains their praise. The authorship has been similar to it in many books, and perhaps Ibn Asaker is at the forefront of them. The people of the books of men in the modern science were the ones who took from it him and relied on him and took him as a reference in the matter of men. What distinguishes it from other books of men, is its singling out the names of some unknown men, those who were called strangers, and sometimes unknown ones, and those for whom there were no news in the books of men; This is what distinguished the book "The History of Baghdad" from other books on this art.