It was constructed in 1507 by one of the famous governors of Ramazanoğlu Governorship, Halil Bey.The complex which was perched on a square plan composes of a mosque, theology school, mausoleum (Halil Bey Mausoleum), harem chamber known as the religious foundation of the palace and greeting hall also called as Tuz Inn. Being different from classical Ottoman mosques, Ulu mosque has no excessive vertical massive impact and reflects to the methods of Memluks and Seljukians.

The mosque is famous with its colored rock and İznik tile decorations as well as its architecture. On square and hexagon plates,the dominant colors of the adornments of the tiles are turquoise, dark blue and red on a white background, complying with the unique colors of the period, which evokes admiration.