Category:Hagia Sophia
Articles relating to the Hagia Sophia, its history, and depictions. The last of three church buildings to be successively erected on the site by the Eastern Roman Empire, it was completed in 537 AD. It was an Orthodox church until the Ottoman conquest of Constantinople in 1453, then a mosque until 1935, then a museum and then from 2020 a mosque again, as well as being a Roman Catholic cathedral for some decades after the Fourth Crusade of 1204.
Category:Buildings converted to Catholic church buildings
Category:Byzantine church buildings in Istanbul
Category:Church buildings converted to a different denomination
Category:Church buildings with domes
Category:Religion in Constantinople
Category:Churches and monasteries of Constantinople
Category:Eastern Orthodox church buildings
Category:Eastern Orthodox pilgrimage sites
Category:Former cathedrals in Turkey
Category:Greece–Turkey relations
Category:Greek Orthodox cathedrals in Europe
Category:Historic Civil Engineering Landmarks
Category:Historic sites in Turkey
Category:Mosques converted from churches in Turkey
Category:World Heritage Sites in Turkey
Category:Wikipedia categories named after buildings and structures in Turkey
Category:Wikipedia categories named after religious buildings and structures