The Hagia Sophia in Istanbul has stood for nearly fifteen centuries – a masterpiece of Late Antique architecture, shaped by the empires, faiths, and upheavals that swept across its walls. Once the greatest cathedral of the Eastern Christian world, it became an imperial mosque, later a museum, and today once again serves as a place of Muslim worship. In this post, I explore the Hagia Sophia history and share my impressions from visiting it – illustrated with a rich selection of photographs.
Hagia Sophia history | histoire de Sainte-Sophie | geschiedenis van de Hagia Sophia | Geschichte der Hagia Sophia | historia de Santa Sofía | historia Hagii Sophii | storia di Santa Sofia | история Айя-Софии | アヤソフィアの歴史 | 아야 소피아의 역사 | 圣索菲亚大教堂的历史 | Ayasofya’nın tarihi
Today I want to introduce you to one of the most monumental buildings of Ancient Europe – the Hagia Sophia in Istanbul. I had always thought of stepping inside and seeing it with my own eyes. When I finally managed to do so last year, I can’t say I was either surprised or disappointed, as I was already well-acquainted with the history of this temple. Yet, with the splendour of other sacred buildings – Catholic, Orthodox, Anglican – that I have had the chance to admire in recent years, and with the Blue Mosque standing right next to the Hagia Sophia, I couldn’t help but feel a certain disappointment at the way its interior looks today.
Let us then look into its history. Let us try to answer the question of what made this temple – the most illustrious and most exquisitely decorated Christian building of its time – although still standing in an almost intact mass, no longer inspire awe with its interior décor as it once did. Let us trace the events that, over the centuries, have shaped its present appearance.
The Beginnings
The Hagia Sophia, meaning Holy Wisdom, is actually the third temple to stand on this site. The first Basilica of Holy Wisdom in Constantinople was built by Emperor Constantius II in AD 360 – a church of the Eastern (Byzantine) rite, still within the single, undivided universal Church, though with liturgy in Greek and traditions distinct from those in the West. It was destroyed by fire in AD 404 during riots sparked by the exile of Patriarch John Chrysostom. The second church, larger and more magnificent, was built by Emperor Theodosius II in AD 415 – also in the Eastern rite, still formally united with the Western Church, yet with growing liturgical and theological differences. This one too was destroyed – in AD 532, during the Nika Revolt that shook the city. The third and most famous Hagia Sophia, whose essential form has survived to this day, was built by Emperor Justinian I. Completed in AD 537, it served as the cathedral of the Eastern rite and the principal church of the Patriarchate of Constantinople. It was a true masterpiece of Late Antique architecture – designed by Anthemius of Tralles and Isidore of Miletus, with a monumental dome, gilded mosaics, and marble cladding.
Very little written evidence has survived describing what the Hagia Sophia once looked like. Our modern vision is based on fragments of sources from the 6th to the 12th century, chiefly the works of Procopius of Caesarea, Paulus Silentiarius, and Bishop Anthony of Novgorod. Upon crossing the threshold of the Hagia Sophia, one would enter a space that seemed not of this world. The dome appeared to float in the air, suspended by an invisible chain of light, whose glow reflected off thousands of golden tesserae. Rays streaming through rows of windows spilled into the interior, mingling with the glow of lamps and candles. The walls and floors were clad in marbles of green, purple, white, and black, brought from the farthest provinces of the empire – from Thessaly, Egypt, and Phrygia. The great altar gleamed with gold, silver, and precious stones. Above it rose a ciborium, supported by columns of green stone adorned with gilded capitals. In the apse, high above the altar, shone a mosaic of the Mother of God with the Child, and below it rows of angels and saints. Along the naves and galleries stretched richly decorated balustrades, and everywhere the eye turned, the golden backgrounds of mosaics shimmered.
Though it has withstood the centuries, the Hagia Sophia suffered serious damage from earthquakes on several occasions – notably in AD 558, 989, and 1346, when parts of its dome collapsed and had to be rebuilt. Yet the greatest blow came not from nature but from human hands – during the Fourth Crusade in AD 1204, and, importantly, at the hands of Christians who were meant to defend the faith, yet ended up plundering the most illustrious Christian building of the age. It should be remembered, however, that since the Great Schism of AD 1054, the temple had represented the Eastern rite, and was thus an Orthodox cathedral, not a Latin (Western Church) one.
The IVth Crusade
At that time, the Angelos dynasty ruled Byzantium. In AD 1195, Emperor Isaac II Angelos was deposed and blinded by his own brother, Alexios III, who seized the throne. Isaac’s son, Alexios IV, fled to the West in search of help. In AD 1202, he reached the Crusaders, who were preparing an expedition to Egypt but lacked the funds to pay for the Venetian fleet. Alexios IV offered them an extraordinary bargain: if they helped him reclaim the throne, he would pay them a vast sum, provide supplies, and promised to unite the Eastern Church with Rome.
The Crusaders, financially bound by their contract with the Venetians, agreed. In AD 1203, they captured Constantinople and placed Isaac II and Alexios IV on the throne. The promised funds, however, proved impossible to raise without plunder and drastic taxation. In January AD 1204, a revolt broke out in the city. Alexios IV was overthrown and killed, and power passed to Alexios V Mourtzouphlos. In April AD 1204, the Crusaders attacked and seized the city once again – this time for themselves.
During the three-day sack, palaces, monasteries, and churches – including the Hagia Sophia – were plundered. Altars of marble and gold were dismantled, mosaics were smashed or prised apart for their golden tiles, and the church’s interior became a scene of profanation – chroniclers speak of horses being led inside and of feasts held in the sanctuary.
Among the priceless relics and treasures looted in AD 1204 was the Crown of Thorns, formerly kept in the imperial chapel of St Mary of the Pharos within the Great Palace. It fell into the hands of the Venetians, probably as part of the Crusaders’ debt repayment to the Republic. It was later purchased by King Louis IX of France, who brought it to Paris. To house it, the Sainte-Chapelle – a masterpiece of Rayonnant Gothic – was built between AD 1242 and 1248. The relic later passed to Notre-Dame Cathedral.
Decline
After the capture of Constantinople in AD 1204, the participants of the Fourth Crusade established the Latin Empire on its ruins, which lasted until AD 1261. Count Baldwin IX of Flanders was placed on the imperial throne and crowned in the Hagia Sophia. The church, until then the cathedral of the Patriarchate of Constantinople in the Eastern rite, was turned into a Latin cathedral, with the liturgy conducted in Latin according to the Western rite. The Orthodox patriarch was exiled and replaced by a Latin patriarch. The Latin Empire controlled only part of the former Byzantine territory, its power relying largely on Venetian support. Economically and militarily, the state was weak.
In AD 1261, the Byzantines of the Palaiologos dynasty recaptured the city, restoring the Eastern rite. Yet the empire they recovered was far smaller than in its glory days, holding mainly Constantinople, the Sea of Marmara region, parts of Thrace, and fragments of Greece. Economically devastated after the Latin occupation, its trade largely taken over by Venetians and Genoese, the empire was too poor and too weak to fully restore the Hagia Sophia. The church was repaired only provisionally, and the lost decorations and relics were never returned.
Politically, Byzantium was forced to navigate between stronger neighbours – the Latin states, Serbia, Bulgaria, and later the rising power of the Ottoman Empire. A weak economy made it impossible to maintain a large army, so the state relied mainly on alliances and mercenary troops for its defence. From the late 14th century, the Ottomans gradually seized Byzantine lands, so that by 1450 the empire had been reduced to Constantinople and a handful of nearby settlements. The city was by then sparsely populated – around 50,000-60,000 inhabitants, compared with several hundred thousand at its height in the 11th century. The Ottomans, under Sultan Mehmed II, prepared a major campaign, employing modern siege artillery, including massive bombards. The siege lasted from April until 29 May 1453, when the Turks breached the walls and entered the city.
Under the Ottoman Empire
After the capture of Constantinople in May 1453, Sultan Mehmed II almost immediately converted the Hagia Sophia into a mosque. The process began within the very first days after the city’s fall. First, the interior was cleansed, all remnants of Christian liturgy were removed, and elements essential for Muslim prayer were introduced. In the apse, a mihrab – a niche indicating the direction of Mecca – was installed, a minbar (pulpit for sermons) was added, and carpets were spread across the floor. The altar, reliquaries, and other liturgical furnishings were taken away. As a result, within just a few days of Constantinople’s capture, the Hagia Sophia was already functioning as a mosque, although the full adaptation of its architecture and aesthetics to the Islamic tradition would continue for decades.
In the first stage, the Christian mosaics and decorations were covered with cloths or a thin layer of plaster wherever required for Islamic prayer. In the 15th century, the Ottomans did not typically engage in the systematic destruction of such imagery – on the contrary, in the case of a monument as valuable and monumental as the Hagia Sophia, they favoured reversible methods, avoiding permanent interference with the decorative structure. The thin plaster was applied without deep bonding to the mosaics, making later uncovering easier. As a result, a significant portion of the mosaics survived the first decades of Ottoman rule in relatively good condition. Their complete covering or partial removal occurred only in the following centuries, usually due to renovations, moisture damage, or alterations. However, elements of gold and silver with intrinsic material value were melted down and reused for other purposes.
After the conversion of the Hagia Sophia into a mosque in 1453, work began on adding minarets, which would become a defining feature of its silhouette. The first minaret was built on the orders of Mehmed II soon after the city’s conquest, probably in brick or stone, positioned at one of the building’s corners. Its form was relatively slender and simple, in keeping with the Ottoman architecture of the time. In the 16th century, under Sultan Selim II and his successor Murad III, the renowned architect Mimar Sinan rebuilt the earlier minaret and added others, constructing them from white stone and giving them a more massive, harmonious appearance. Ultimately, the Hagia Sophia acquired four minarets – each slightly different, as they were built in different periods: the two south-western ones are larger and more solid, while the north-eastern and south-eastern are more slender. The minarets not only served a religious function (the call to prayer) but also became a visual symbol of the Islamisation of the former cathedral.
At Present
After the First World War, the Ottoman Empire, allied with Germany, was defeated. It was divided among the victorious powers, and Istanbul was occupied by British, French, and Italian forces. In Anatolia, the Turkish War of Independence (1919–1923) broke out under the leadership of Mustafa Kemal Pasha, later known as Atatürk. It ended with the Treaty of Lausanne (1923), which recognised the sovereign Turkish state. In the same year, the sultanate was abolished, and the capital was moved from Constantinople (Istanbul) to Ankara.
The Hagia Sophia continued to function as a mosque until 1931, when it was closed to worshippers by decision of the Republican authorities. In 1935, as part of Atatürk’s secular reforms, it was converted into a museum. This opened the way for the first systematic conservation work, including the uncovering of mosaics that had been hidden since the Ottoman era.
In 2020, the Hagia Sophia was once again converted into a mosque, resulting in changes to both access and interior display. The ground floor – the main prayer space – is now reserved for Muslim worshippers (primarily men), while tourists may access only the upper galleries. The mosaics on the ground floor uncovered during conservation work have not been destroyed or plastered over, but are covered with cloths and curtains. Some of these coverings remain in place even outside prayer times. By contrast, the mosaics uncovered in the upper galleries – being outside the prayer area – remain accessible and visible to visitors.
Although I was equipped with a fairly good camera, I was nevertheless unable to fully capture what was happening on the lower level of the church. The angles from which photographs can be taken from the galleries did not allow for a precise view of that part, so from my own observation I cannot confirm exactly what the situation is in the lower section of the interior. My camera has good zoom, but in darker spaces exposure time has its limits if you don’t have a tripod.
As for the upper section in the galleries, as far as I can recall, only two or three uncovered mosaics were visible. One was in relatively good condition, the other was damaged by about half – just as shown in the photographs attached. There is also a mosaic in the entrance area, outside the prayer zone, which currently has no unrestricted access, so it is likely viewed only by tourists – and it is this very mosaic that depicts the scene in which Emperor Constantine the Great offers the city, and Emperor Justinian I offers the Hagia Sophia, to the Blessed Virgin Mary and Christ. A photograph of this mosaic is also included in this material.
In the upper section, almost everywhere one can see plastered surfaces that have not been renovated for years. Much of this plaster is cracked, with peeling paint, as is clearly visible in the photographs. Conservation work, however, can be seen being carried out on the exterior of the church.
Hagia Sophia in Pictures
Hagia Sophia inside as it currently is.
The Hagia Sophia is a living testament to centuries of faith, power, and change. Its walls still echo with the grandeur of its past, even as time and transformation have altered its form. Whatever its role, it remains one of the world’s most remarkable monuments.
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