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Photo: Dosseman, CC BY-SA 4.0 via Wikimedia Commons
Built around 1250 AD as the Surp Hagop (St Jacob) Armenian Church, it became a mosque circa 1380, when the Ottomans wrested the city from the Armenian Kingdom of Cilicia. From 1501 it acquired a külliye - the medrese survives. "Hagop" morphed into Yağup then in the time-poor 19th century got shortened to Yağ, "oil".
Yağ Cami or Oil Mosque is a historical mosque located in the old town of Adana, Turkey which was originally built as the Surp Hagop Armenian Apostolic Church at the second half of the 13th century during the Armenian Kingdom of Cilicia. It was converted into a mosque in c. 1501 by the Ramazanoğlu Bey Şihabeddin Ahmed, just after taking over the city. It is the oldest mosque in the city and later on formed part of the külliye that also includes a madrasah.
© OpenStreetMap contributors
Traditional 19th century mansion where Atatürk stayed in 1923, and restored as a museum in 1981. Signage is only in Turkish.
This relocated from the riverside in 2019. It's now in a former textile mill, with space to display the extensive high-quality collection - you need 2 or 3 hours to see it.