Hagia Sophia is a UNESCO World Heritage Site in Istanbul, Turkey. It was built in 537 as the Greek Orthodox patriarchal cathedral, later becoming a Roman Catholic cathedral, then a Sunni mosque, then a museum. It currently functions as a mosque. Hagia Sophia or Saint Sophia may also refer to: The Greek for Holy Wisdom, a concept in Christian theology Churches Australia Saint Sophia Cathedral, Sydney (1928), a Greek Orthodox cathedral in Paddington, Sydney, New South Wales St Sophia Greek Orthodox Church (), a Greek Orthodox church in Surry Hills, Sydney, New South Wales Belarus Saint Sophia Cathedral in Polotsk (11th century), a cathedral in Polotsk Bulgaria Saint Sofia Church, Sofia (6th century), a church in Sofia Hagia Sophia Church, Nesebar (9th century), a church in Nesebar China Saint Sophia Cathedral, Harbin (1907), a church in Daoli, Harbin City, Heilongjiang Province Cyprus Saint Sophia Cathedral, Nicosia (11th century), a former church in Nicosia; now a mosque since 1570 Greece Hagia Sophia (8th century), a church in Thessaloniki Hagia Sophia (10th century), a church in Drama Hagia Sophia (12th century), a church in Monemvasia Hagia Sophia (14th century), a church in Mystras North Macedonia Saint Sophia, Ohrid (9th century), a church in Ohrid Russia Saint Sophia Church, Moscow (17th century), a church in Moscow Nikolskaya Church (1813), a church in Kamenki, Nizhny Novgorod Oblast Saint Sophia Cathedral in Novgorod (11th century), a church in Novgorod St. Sophia Cathedral, Pushkin (1788), a cathedral in Pushkin, St Petersburg Saint Sophia Cathedral, Vologda (1570), a Russian Orthodox cathedral in Vologda Turkey Little Hagia Sophia (6th century), originally a church in Istanbul, now a mosque Hagia Sophia, Iznik (6th century), originally a church in Nicaea, now a mosque Hagia Sophia, Trabzon (13th century), originally a church in Trabzon, now a mosque Ukraine Saint Sophia Cathedral, Kyiv (11th century), a church in Kiev Saint Sophia Cathedral, Zhytomyr (1748), a cathedral in the Roman Catholic Diocese of Kyiv-Zhytomyr United Kingdom Saint Sophia (London) (1882), a cathedral in London United States Saint Sophia (Los Angeles) (1952), a cathedral in Los Angeles St. Sophia Greek Orthodox Cathedral (1948), a cathedral in Miami Saint Sophia Cathedral (Washington, D.C.) (1951), a cathedral in Washington, D.C. Other uses SS Sussex, an 1896 cross-English Channel passenger ferry also known as Aghia Sophia See also Ayasofya Mosque (disambiguation) Sancta Sophia College, University of Sydney, Australia Sofia (disambiguation) Sofia Church (disambiguation) Sophia (disambiguation) Santa Sofia