Hagia Sophia

Hagia Sophia, officially called the Hagia Sophia Grand Mosque and formally known as the Temple of God's Holy Wisdom, is a very important building in Istanbul, Turkey. It was originally built as a church and later became a mosque, and for a time it was a museum. The current building was completed in the year 537 and was the largest indoor space in the world at that time. It is a wonderful example of Byzantine architecture and has influenced many other buildings for centuries.

The building was constructed under the orders of the Byzantine emperor Justinian I by two Greek architects, Isidore of Miletus and Anthemius of Tralles. It served as the main church of Constantinople, the capital of the Byzantine Empire, for over 900 years. Even after the city fell to the Ottoman Empire in 1453, it continued to be an important religious site.

Hagia Sophia has been the model for many other churches and mosques, including several famous Ottoman structures. Over the years, it has had many different roles, from a church to a mosque to a museum, and then back to a mosque again in 2020. Because of its long and rich history, Hagia Sophia remains one of the most visited and respected buildings in the world.

History

The Hagia Sophia has a rich and complex history, evolving through different phases as a church, mosque, and museum. Initially constructed as the Magna Ecclesia (Μεγάλη Ἐκκλησία, Megálē Ekklēsíā, 'Great Church') in 360 AD under Emperor Constantius II, it was built next to the Great Palace in Constantinople (modern-day Istanbul). The church was later rebuilt and expanded under Emperors Theodosius II and Justinian I, with the latter commissioning a grand, domed structure completed in 537 AD. This version became renowned for its architectural innovations and grandeur.

Throughout its history, the Hagia Sophia has undergone numerous transformations. It served as the primary church of Constantinople until its conversion into a mosque following the Ottoman conquest in 1453 under Sultan Mehmed II. During this period, it was extensively renovated and adapted to Islamic worship, including the addition of minarets and the covering of Christian mosaics. In 1935, Turkish leader Mustafa Kemal Atatürk repurposed it as a museum, showcasing its rich blend of Byzantine and Ottoman heritage until it was reconverted into a mosque in 2020. Each phase of its history reflects broader cultural, religious, and political shifts in the region.

Architecture

Hagia Sophia is one of the greatest surviving examples of Byzantine architecture. Its interior is decorated with mosaics, marble pillars, and coverings of great artistic value. Justinian completed the largest basilica ever built up to that time, and it remained the largest church for 500 years.

The building uses masonry construction with brick and mortar joints. The vast interior features a central dome that rests on an arcade of arched windows. The dome’s design was innovative for its time, using spherical triangular pendentives to support its weight.

Notable elements and decorations

The Hagia Sophia has many beautiful decorations inside. Originally, the walls and floors had marble with abstract designs, and the curved parts of the ceiling had mosaics. Some old mosaics of angels named Gabriel and Michael are still there today. Later, more pictures were added, including images of Jesus, saints, and important people connected to the church. During a time called the iconoclastic controversy, many of these pictures were destroyed, but new ones were made later.

There are special parts inside the Hagia Sophia, like the Loge of the Empress where the empress and ladies of the court would sit. There are also big marble urns brought from Pergamon, a Marble Door with fruit and fish designs, and a Wishing Column that people touch for good luck. One interesting find is a Viking inscription that says, "Halvdan was here," showing that Vikings once visited this great building.

Loggia of the Empress

The loggia of the empress is in the middle of the gallery, above the Imperial Gate. From here, the empress and court ladies could watch events below. A special green stone disc marks where the empress’s throne stood.

Lustration urns

Two large marble urns used for rituals were brought from Pergamon during the time of Sultan Murad III. They are from the Hellenistic period and carved from single blocks of marble.

Marble Door

The Marble Door is inside the Hagia Sophia, used by people in important meetings. Its panels have fruits and fish designs, and it is said one side stands for heaven and the other for hell.

Nice Door

The Nice Door is the oldest part of the Hagia Sophia, from the 2nd century BC. It has geometric and plant designs and was brought from a pagan temple in Tarsus.

Imperial Gate

The Imperial Gate is the largest door in the Hagia Sophia, used only by the Emperor. It is very big, measuring 7 metres, and some stories say it was made from wood of Noah’s Ark.

Wishing column

There is a column with a hole in the middle that people call the Wishing Column. Legend says it has been moist since the year 1200 and that touching the moisture can cure illnesses.

Viking inscription

In the southern part of Hagia Sophia, a Viking inscription from the 9th century was found. It says, "Halvdan was here," and it is thought to have been made by a Viking soldier serving in the Eastern Roman Empire.

Mosaics

The first mosaics in Hagia Sophia were completed during the rule of Justin II. Many of these early mosaics did not include figures and came from this time. Most of the famous mosaics were made later, in the 10th and 12th centuries, after a time when images were banned in Byzantine Iconoclasm.

During the Sack of Constantinople in 1204, invaders damaged many valuable items, including golden mosaics. Many of these were taken to Venice, where leaders had helped organize the attack.

When Hagia Sophia became a mosque in 1453, many Christian images were covered because Islam's ban on representational imagery did not allow them. In the mid-1800s, restorers documented some hidden mosaics before covering them again. They uncovered important images, such as angels and figures like Christ Pantocrator.

In the 1930s, more mosaics were uncovered. Restorers tried to balance showing Christian art while respecting Islamic traditions. The building has also faced damage from water and earthquakes over the years. Hidden spaces beneath the floor were discovered using special tools.

Some famous mosaics include:

• The Imperial gate mosaic with Leo VI kneeling before Christ.
• The southwestern entrance mosaic with Justinian the Great, Constantine the Great, and the Virgin Mary.
• The apse mosaic of the Virgin Mary and Christ the Child.
• The Empress Zoe mosaic.
• The Comnenus mosaic.
• The Deësis mosaic.
• The northern tympanum mosaic depicting Saint John Chrysostom.
• A Seraph angel from the 13th century CE.

Other burials

Several important historical figures are buried at Hagia Sophia. These include Selim II (1524 – 15 December 1574), Murad III (1546–1595), and Mustafa I (c. 1600 – 20 January 1639), who is buried in the courtyard. Also buried there is Enrico Dandolo (c. 1107 – June 1205), located in the east gallery.

Works influenced by the Hagia Sophia

Many buildings have taken inspiration from the Hagia Sophia's design, which features a large central dome supported by special curved structures and two smaller domes on either side.

Byzantine churches such as the Hagia Sophia in Thessaloniki and the Hagia Irene show this influence. Neo-Byzantine churches like the Kronstadt Naval Cathedral, Holy Trinity Cathedral, Sibiu, and Poti Cathedral closely copy the Hagia Sophia's interior shape. Other churches, including the Catedral Metropolitana Ortodoxa in São Paulo and the Église du Saint-Esprit (Paris), use similar dome designs. Several mosques commissioned by the Ottoman dynasty, such as the Süleymaniye Mosque and the Bayezid II Mosque, also have plans based on the Hagia Sophia. Even some synagogues, like the Congregation Emanu-El (San Francisco), Great Synagogue of Florence, and Hurva Synagogue, reflect its influence.