The mosque was originally a crusader-era Armenian church known as the Monastery of Saint James.
The transition from a church to a mosque was commissioned by the Ramazanoğlu family, a Turkic dynasty that ruled the region.
The stone carving on the mosque's portal remains one of the best-preserved examples of 16th-century regional craftsmanship.
Despite its conversion, some architectural elements retain distinct traces of the original 13th-century Armenian ecclesiastical design.
The mosque's minaret was added after the conversion, reflecting the standard Ottoman transition for captured or repurposed religious buildings.
The Yağ Mosque, originally built as the Saint James Church in 1501, represents a significant example of architectural transformation in Adana. It was converted into a mosque in 1579 by Ramazanoğlu Piri Pasha, a local ruler of the Dulkadirid principality. The structure features a unique blend of Seljuk-style stone masonry and later Ottoman modifications. Its name, which translates to 'Oil Mosque,' originated from the historical oil bazaar that once operated in the surrounding area. The building serves as an active religious site while maintaining its historical facade. Notable features include the original baptismal stone from the church era, which has been repurposed as a fountain base within the courtyard. The mosque is situated in the central Alidede district, serving as a landmark of the city's multicultural heritage.
The main portal entrance, which captures the intricate stonework and historical transition from church to mosque.
Visit during the shoulder seasons of spring or autumn to enjoy the outdoor courtyard comfortably.
Observe the minaret closely to see the contrast between the older stone work of the base and the newer Ottoman-style masonry.
Check the surrounding bazaar area, which maintains the historical commercial atmosphere of the original oil market.
Avoid visiting during Friday congregational prayer times when the mosque is at its busiest and closed to tourists.
Visitors should dress modestly with shoulders and knees covered; women should bring a headscarf; remove shoes before entering the prayer hall.