
Hagia Sophia, officially the Hagia Sophia Grand Mosque, is a former Christian church converted into a mosque, and is a major cultural and historical site in Istanbul, Turkey. The building was erected three times by the Eastern Roman Empire. The present Hagia Sophia is the third, built in 537 AD
Iconic, storied mosque set within a vast, domed former Byzantine church with stained-glass windows. Hagia Sophia a structure built under order of Justinian, and later turned into a mosque, when it was captured by the Ottoman imperial in 29 May 1453. The structure is now a museum in Istanbul, Turkey.