"One of the oldest and greatest churches in the world, the Hagia Sophia was dedicated to the wisdom of God. It was the pride of all empires that held it."
Hagia Sophia is a former Greek Orthodox patriarchal basilica, later an imperial mosque, and now a museum in Istanbul, Turkey. From the date of its construction in 537 until 1453, it served as an Eastern Orthodox cathedral and seat of the Patriarchate 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 1453 until 1931. It was then secularized and opened as a museum in 1935.