Inside the Alaettin Camii (1267; in another book 1270 is given), or Ulu Camii (Great Mosque). The style is the ancient one, with the building stretching with its short side towards Mekka.
This is the mihrab, the recess indicating the direction of Mekka. It was added in 1429 by the local Candaroğlu emir. During an earthquake when the central dome came down in 1850, the mihrab was smashed, (I understood pieces were sent to the Istanbul Çinili Köşk museum), in the same year it was reconstructed.