The Hagia Sophia, one of the historical architectural wonders that still remains standing today, has an important place in the art world with its architecture, grandness, size and functionality.

Hagia Sophia is a former Christian patriarchal basilica (church), later an imperial mosque, and now a museum (Ayasofya Müzesi) in Istanbul, Turkey. From the date of its construction in 537 until 1453, it served as an Orthodox cathedral and seat of the Patriarch of Constantinople, except between 1204 and 1261, when it was converted to a Roman Catholic cathedral under the Latin Empire. The building was a mosque from 29 May 1453 until 1931. It was then secularized and opened as a museum on 1 February 1935