The Grand Mosque of Kutahya The Grand Mosque of Kutahya, also known as Yıldırım Beyazit Mosque, was initially constructed during the reign of Yildirim Bayezid (1381-84) and completed in 1401. It is the largest and most magnificent mosque in Kütahya. The mosque has a rectangular plan and was restored by Mimar Sinan during Sultan Suleiman I's Rhodes expedition in 1893. It took its final shape during the reign of Abdulhamid II after undergoing further repairs. Covering an area of 45 by 25 square meters, the mosque features a minaret in the northeast corner and doors in three directions, one leading to Sakahane. The columns inside the mosque are sourced from the ancient city of Aizanoi. Inside the mosque, there is a small fountain above an ornate mihrab. The main space of the mosque is adorned with two side-by-side domes supported by six columns and half-domes on the sides. One of the mosque's highlights is a tiled panel on the right of the protruding mihrab depicting the Kaaba.