Hagia Sophia in which city of Turkey

The correct answer is Istanbul. Hagia Sophia is located in Istanbul, Turkey. Originally built as a Christian cathedral in 537 CE under the Byzantine Emperor Justinian I, it served as the world's largest cathedral for nearly a thousand years. After the Ottoman conquest in 1453, it was converted into a mosque and later became a museum in 1935. In 2020, it was reconverted into a mosque. The structure is renowned for its massive dome and rich mosaics. Ankara is the capital of Turkey, Antalya is a coastal city, and Izmir is a major port city, but none of these are the location of Hagia Sophia. Istanbul, formerly Constantinople, is the city that holds this iconic monument, making it the correct answer.