This tower, located in the Beykapısı location of the Urfa city walls, was built during the Haçlı Countship period. Since the gate aghaship was given to the Mahmutoğlu family in the last periods of the Ottoman Empire, it was known by their name. During the British occupation of Urfa on March 24, 1919, the occupation commander Beddy wanted to rent it, but this offer was met with a reaction by the tower's owner, Mahmudoğlu Mustafa Ağa, and was rejected. After being abandoned to its fate for a long time, it was purchased by the Şanlıurfa Municipality in 2008 and restored for use as a "city museum." It is distinguished from other museums by being a museum that contains the historical, geographical, archaeological, religious, cultural, social, economic, commercial, transportation, health, architectural, sports, administrative and touristic development of Şanlıurfa from its foundation to the present day, and information, documents and compilations of important people and events in this development process, as well as visual presentations and animations. Inside the City Museum, there is a city model, visual presentations of the prophets who lived in Şanlıurfa through holograms, and all kinds of important and special information, documents, certificates, books, photographs, hand tools, musical instruments, kitchenware, traditional clothes, and materials related to handicrafts are also exhibited. Agricultural tools are also included in the animations of plants and animals found in Urfa.