Great Hagia Sophia Mosque (Istanbul)
About the Structure
Hagia Sophia Mosque is one of the oldest and most magnificent structures in Istanbul. It was first built in 537 AD by the Byzantine Emperor Justinian I as a grand church. Over the centuries it has served as a church a mosque a museum and again as a mosque. Its massive dome mosaics and four minarets have made it a symbol of both the past and the present.
The History of Hagia Sophia
Hagia Sophia was converted into a mosque in 1453 following the conquest of Istanbul by Fatih Sultan Mehmet. During this period minarets were added and some Christian figures were covered. In 1935 it became a museum and in 2020 it was reopened as a mosque.

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Hagia Sophia is a unique structure that houses both Christian and Islamic cultures. For this reason people from not only Türkiye but from all around the world come to see it.
Architectural Features
The most striking feature of Hagia Sophia is its massive dome. This dome approximately 55 meters high creates an echo within the interior. The interior walls contain mosaics inscriptions and columns. The building has four minarets which were added during the Ottoman period. Inside both angelic figures and Arabic calligraphy coexist reflecting Hagia Sophia’s multicultural history.
Hagia Sophia in Daily Life
Today Hagia Sophia Mosque serves both as a place of worship and a historical site. Many local and international tourists come to Istanbul specifically to see this grand structure. Visitors are expected to remain silent avoid using flash photography and show respect for designated areas.
Cultural Activities
Historical walks student tours and documentary filming take place around Hagia Sophia. Guides explain the dome structure the mosaics and historical events to visitors. During Ramadan open-air iftar tables are set up lighting displays are installed and various events are organized.

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Where Is It on the Map?
Hagia Sophia Mosque is located in the Fatih district of Istanbul on Sultanahmet Square. Nearby are other significant structures including Sultanahmet Mosque Topkapı Palace and the Yerebatan Cistern.
- City: Istanbul- District: Fatih- Historical Significance: One of Istanbul’s most important structures with a 1500-year history- Importance to Türkiye: A symbolic structure representing Türkiye’s architectural and cultural heritage- Visit Status: Open for worship- Notable Feature: A historical monument distinguished by its massive dome mosaics minarets and layered history
References
Ministry of Culture and Tourism of the Republic of Türkiye: Hagia Sophia Promotion PublicationsIstanbul Provincial Directorate of Culture and TourismTurkish Religious Foundation Encyclopedia of Islam Article “Hagia Sophia”UNESCO World Heritage List RecordsMEB Publications: Series on Historical Structures of Türkiye

