The minaret exhibits a visible inclination similar to the Tower of Pisa, caused by ground settling over centuries.
The mosque was built during the Mengujekid period, predating the more common Ottoman-era mosques in the region.
The interior layout utilizes a 'forest of columns' design common in early Islamic architecture, diverging from the later Ottoman single-dome style.
The minaret's brickwork includes geometric inscriptions in Kufic script.
The mosque has survived several major earthquakes in the Sivas region due to its thick masonry construction.
The Sivas Ulu Mosque is a 12th-century structure commissioned in 1197 during the reign of the Mengujekids. It is one of the oldest mosques in Anatolia, notable for its distinctively leaning brick minaret. The prayer hall features a rectangular plan supported by thick masonry columns arranged in aisles. The minaret, constructed in 1213 by Alaeddin Keykubat I's mother, features intricate brickwork patterns and a slight tilt visible from the courtyard. The mosque incorporates Seljuk-era architectural elements, including heavy stone foundations and vaulted ceilings. It underwent multiple restorations in the 20th century to stabilize its structural integrity. The courtyard is characterized by a central fountain and surrounding porticos. It serves as a significant example of early Anatolian-Turkish mosque architecture before the adoption of the central dome style.
The courtyard corner looking upward to capture the contrast between the tilted minaret and the mosque's flat roofline.
Visit during daylight hours to clearly observe the tilt of the minaret against the skyline.
Remove footwear before stepping onto the carpeted areas of the main prayer hall.
Dress modestly, covering shoulders and knees out of respect for active worshipers.
Attempting to enter the mosque interior during the five daily prayer sessions or during Friday congregational prayers.
Visitors must remove shoes at the entrance; modest clothing covering shoulders, arms, and legs is required; remain silent during prayer times.
