The Grand Mosque, located within the city walls, has taken its current form through various repairs and additions in various periods. The structure, which consists of two separate sections, consists of the main section with an iwan and an inner courtyard and a second annex to the north. In the structure, the dome in front of the mihrab, the adjacent iwan and the inner courtyard with a portico in front of it constitute the basis of the plan. In terms of both its plan and brick material, this structure is a direct extension of the Great Seljuk mosque construction technique in Iran. Two different materials, stone and brick, were used in the construction of the structure. The main walls are rubble stone; the supports, arches and portals in the interior are of regular cut stone. The dome and vaults that have preserved their original state, the western portico of the courtyard and the minaret are built entirely of brick. On the outside, all facades of the structure are supported by buttresses added during subsequent repairs (Eskici, 2013, p.36).

The minaret was built adjacent to the north end of the west wall and its base is inside the annex in the north. The brickwork in the horizontal stacking order on the body was stacked by shifting 1/2 brick length in each row. Today, there are remains of three portals on the west, south and east facades of the building. Only the east portal is used. The interior consists of a dome, iwan and courtyard structure arranged one after the other on the mihrab axis and naves extending parallel to the qibla on the side wings. The naves are covered with pointed barrel vaults. The elements that constitute the basis of the plan in the building today are the dome in front of the mihrab, the iwan adjacent to it and the rectangular planned inner courtyard with portico in front of the iwan.

The iwan and dome also attract attention with their original brick structure and tiled decorations. Only the western portico of the courtyard has partially preserved its original state. The mihrab was built later. The wooden pulpit on the right is a recent addition. It is in the form of a simple semi-cylindrical niche. There is no inscription on the mosque today that gives the date of its first construction. However, there are repair and additional inscriptions from different dates and periods in different parts. The tile decoration in the courtyard has a master inscription in the scraping technique with purple colored tiles, and the one on the left has intricate plant decorations. The master inscription reads “Amele, Yakup bin Ebûbekir el-Malatî” (Yetkin, 1986, p.47). It was repaired in 2005-2006. The structure was damaged in the earthquake on January 24, 2020 and is being repaired by the Foundations Regional Directorate.

Parts of the building were damaged in the earthquakes of February 6, 2023.

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