One of the oldest neighborhoods of the church, Hacı Gümüş Mahallesi (SIBAT Mahallesi), is located at Ulu Cami Sokak, No:41, and this mosque is the oldest and largest mosque of the church and offers a beautiful visual feast in comparison to the others.A mosque with a rectangular plan and a domed niche extending parallel to the dome. The East and west parts of the dome are covered with cross vaults. The altar front dome of the mosque, which is not the last Community place, is “7.30 m” in diameter and extends along the two sides. Four burials were made of brick and covered with hair. There are twelve windows with arches in the dome pulley, which has a round outer twelfth in it.Placed in the middle axis of the Haram, this altar is filled with niche Muqarnas with pointed arches. The capitals of the columns in their corners are decorated with Rose and palm leaf motifs. It is a small but well thought out detail.The mosque is opened to the courtyard in the North and has Madrasah cells in the East and west of the courtyard. The courtyard can be accessed through the portal to the Northeast and the gate to the West. Through the open arch door opening, a cross vault is opened. Surrounded by pentagonal and cross vaults, the courtyard is decorated with cells around the porch, with flat roofs.In the northern direction of the courtyard, there are a niche niche in both of the stacking feet. The portico area with pointed arches, covered with cross vaults, was used in the past as the “mosque-I Kebir, Mosque of Shafia” (Mosque of Shafia) "Mosque of Shafia / mosque - Kebir in the Mosque of Shafii" in the records of the Hurufat book.The square minaret with its pedestal plan is composed of yellow / yellowish and black smooth cut stones. The upper corners of the pedestal are expensive, and there is also an arched door in the south direction.The polygonal minaret body rises on an octagonal Sun. The honeycomb of the minaret and its cone are as simple as its bracelet-free body. The minaret without the world is the only honor. We can also say that the star motifs made with ajur technique on the upper part of the honeycomb with mukarnas in the underglaze are among the outstanding decorations of the structure.The conspicuous decorations in the mosque are collected on the altar and on the mihrab on both sides of the portal. The arch belly of the portal with round arches and an octagonal in the embedding feet of the arch; Square in the lower arch; rectangular in the head Arch and rectangular in the geometric shapes were also included. The mihrabis on both sides of the portal are also surrounded by expensive erasures. This adds a distinct charm.  Unfortunately, a colored, smooth cut stone was used in this mosque, which was not known to the one who did it, and it was repaired in 1924 by Hacı Ahmet Azizi, the famous architect of Aleppo.The historical building was last repaired by the Regional Directorate of foundations in 2016. The exact date of the Mosque of the lung is unknown. According to the construction inscription of the minaret in the courtyard of the Mosque of the Akçurun in the bazaar known as Kızılca Mahallesi in Hacı Ilyas district (old records Kızılca Mahallesi), it is written that it was built in 1583 by his daughter Seyyide Fatma Hasan. In the records, the mosque's Bani Sheikh David passes as Ağa .The Mosque of the lung has a large courtyard and there are Madrasah cells around it. The Mosque of the Akçur has a rectangular plan and the last congregation place with two sainteuses and one Sainte Haimen. The last Community place is covered with cross vaults and vaults are placed in the consul on the northern side of the Harim with five piles and five piled feet. The last congregation is entered through a gate with an arch pressed against the Haram, and there is an inner window with a rectangular scarf on both sides of the door. A niche with no ornaments is quite simple. There is a large window on top with pointed arches made later.On the right side of the altar, the marble made of marble is also plain and ornamented like the altar. The minaret which is in the northwest direction of the courtyard is a rectangular pedestal; the upper corners of the pedestal are expensive. Between the body of the octagonal pabuyla minaret there are two octagonal erasure. The minaret with one belt in its trunk was filled with six mukarnas. Because the word ‘curun’ in Kilis's mouth means ‘licking, swimming pool’, it is named as the pool made of white stone, i.e. the pool of the well inside the mosque.