Constantinople
On the 11th of May 330, Emperor Constantine the Great stood before a crowd of tens of thousands to dedicate his new capital. The ceremony marked the official birth of Constantinople on the site of ancient Byzantium. This was not merely a renaming but a strategic relocation of imperial power from Rome to the Bosporus. Constantine had spent six years building the city from scratch after selecting the location in 324. He divided the expanded territory into fourteen regions and filled it with public works worthy of an empire. Columns, marbles, doors, and tiles were stripped wholesale from temples across the Roman world to adorn the new streets. A great street called the Mese ran through the center, lined with colonnades and passing seven hills that supposedly matched those of old Rome. At its western end stood the Golden Gate, which later became part of the Theodosian Walls. The emperor promised free food distributions to citizens, issuing eighty thousand rations daily from one hundred seventeen points around the city. This massive logistical operation ensured the population would grow rapidly under imperial protection.
The dome of Hagia Sophia rose over the city like a crown held aloft by God alone. Built between 532 and 537 under Emperor Justinian I, this cathedral cost twenty thousand pounds of gold to construct. Six hundred people served the church including eight priests who conducted services within its vast interior. The architectural form combined a circular dome symbolizing secular authority with rectangular temple shapes typical of Christian worship. Justinian commissioned architects Anthemius of Tralles and Isidore of Miletus to replace the previous basilica destroyed during the Nika riots of 532. Fires set by mobs consumed the original structure but left the new building standing as a testament to imperial power. The Great Palace connected directly to the cathedral so the imperial family could attend services without crossing public streets. Other monuments included the Hippodrome seating over eighty thousand spectators for chariot races and political acclamations. The Column of Constantine stood in the Forum of Constantine crowned with seven rays looking toward the rising sun. A mile marker called the Milion measured distances across the Eastern Roman Empire from the Augustaion square. These structures formed an urban landscape that rivaled Rome while serving as the heart of Byzantine administration.
The Golden Horn provided a spacious harbor where ships from across the Mediterranean docked daily. Merchants traded goods between Europe and Asia through this narrow strait connecting the Black Sea to the Aegean. By the tenth century, the city housed between five hundred thousand and eight hundred thousand people. Guilds regulated production prices import and export under the supervision of the Eparch who managed commercial life. Each trade corporation held its own monopoly preventing merchants from belonging to multiple groups simultaneously. Venetian factories operated on the north side of the Golden Horn while Genoese colonies grew in Galata. Foreigners numbered around sixty thousand out of four hundred thousand total residents by the late twelfth century. A small Jewish community of two thousand five hundred people also lived within the walls. Money circulation increased dramatically during the Komnenian dynasty reflecting general prosperity. The volume of trade made possible by Italian city-states helped fuel economic growth throughout the region. Markets along the Mese street bustled with activity where over five hundred prostitutes conducted business according to Procopius. Ibn Battuta noted in 1325 that most artisans and salespeople in these bazaars were women.
Emperor Leo III issued a decree in 726 ordering the destruction of religious images including a statue of Christ above one door of the Chalke. An officer tasked with carrying out the order was killed by an angry crowd before the image could be removed. Iconoclast movements caused serious political unrest throughout the eighth and ninth centuries as emperors alternated between banning and restoring veneration of icons. Constantine V convened a church council in 754 condemning image worship after which many treasures were broken burned or painted over with depictions of trees birds or animals. Empress Irene restored icon veneration through the Second Council of Nicaea in 787 following her husband's death. The controversy returned in the early ninth century only to be resolved again in 843 during the regency of Empress Theodora who finally restored the icons permanently. These theological disputes contributed to deteriorating relations between Western Catholic and Eastern Orthodox churches leading to the Great Schism of 1054. Constantinople became known as the cradle of Orthodox Christian civilization guarding Christendom's holiest relics like the Crown of Thorns and True Cross. The Ecumenical Patriarch served as the spiritual leader based within the city while maintaining independence from Rome.
Theodosius II built triple-wall fortifications rising eighteen meters high between 413 and 414 that remained unbreached until gunpowder arrived. Arab armies besieged the city twice first from 674 to 678 and secondly from 717 to 718 but Greek fire destroyed their fleets. Khan Tervel of Bulgaria rendered decisive help during the second siege earning him the title Saviour of Europe. In 1204 Crusader forces breached the sea walls on the 12th of April after a failed attack on the 6th of April. The invaders poured into the city giving it over to pillage for three days according to historian Steven Runciman. For half a century Constantinople became the seat of the Latin Empire before Michael VIII Palaiologos liberated it in 1261. By May 1453 defenders numbered only four thousand seven hundred Greeks plus two hundred foreigners totaling under eight thousand men. Sultan Mehmed II constructed the fortress Rumelihisarı at the narrowest point of the Bosphorus to restrict passage between seas. His Hungarian gunsmith Urban built cannons powerful enough to bring down the walls within seven weeks of siege beginning the 6th of April 1453. The empire fell on the 29th of May 1453 when approximately thirty-three thousand people were captured by Ottoman troops.
Mehmed II entered through the Gate of Charisius on the second day of his conquest riding directly to Hagia Sophia. He ordered an imam to chant the adhan transforming the Orthodox cathedral into a Muslim mosque solidifying Islamic rule. Building projects commenced immediately including repairs to walls construction of citadels and building new palaces. Five thousand households needed to be transferred to the city by September as part of resettlement orders issued across the empire. Prisoners of war and deported people called Sürgün arrived from all over the Islamic world creating diverse neighborhoods like Aksaray and Çarşamba. Plague outbreaks caused many residents to flee so Mehmed allowed deported Greeks to return in 1459. The Tanzimat reforms between 1839 and 1876 introduced European architectural fashions alongside secular legal codes. Sultan Abdülmecid I commissioned the Dolmabahçe Palace built between 1843 and 1856 shifting ceremonial functions toward the Bosphorus waterfront. Allied forces occupied Constantinople from November 1918 until 1923 after World War One ended. The Turkish Republic was proclaimed in 1923 moving the capital to Ankara while the city remained Turkey's largest commercial hub. On the 28th of March 1930 the city was officially renamed Istanbul ending centuries of use for its former name.
Common questions
When was Constantinople officially founded by Emperor Constantine the Great?
Emperor Constantine the Great officially dedicated his new capital on the 11th of May 330. This ceremony marked the official birth of Constantinople on the site of ancient Byzantium after he selected the location in 324.
Who built the dome of Hagia Sophia and when did construction take place?
Architects Anthemius of Tralles and Isidore of Miletus built the dome of Hagia Sophia between 532 and 537 under Emperor Justinian I. The cathedral cost twenty thousand pounds of gold to construct and replaced a previous basilica destroyed during the Nika riots of 532.
What was the population size of Constantinople by the tenth century?
By the tenth century, the city housed between five hundred thousand and eight hundred thousand people. Foreigners numbered around sixty thousand out of four hundred thousand total residents by the late twelfth century.
How long did the walls of Constantinople remain unbreached before gunpowder arrived?
Theodosius II built triple-wall fortifications rising eighteen meters high between 413 and 414 that remained unbreached until gunpowder arrived. Arab armies besieged the city twice from 674 to 678 and secondly from 717 to 718 but Greek fire destroyed their fleets.
When did Sultan Mehmed II capture Constantinople and how many defenders were present?
The empire fell on the 29th of May 1453 when approximately thirty-three thousand people were captured by Ottoman troops. By May 1453 defenders numbered only four thousand seven hundred Greeks plus two hundred foreigners totaling under eight thousand men.
On what date was the city officially renamed Istanbul after being known as Constantinople for centuries?
On the 28th of March 1930 the city was officially renamed Istanbul ending centuries of use for its former name. The Turkish Republic was proclaimed in 1923 moving the capital to Ankara while the city remained Turkey's largest commercial hub.
All sources
54 references cited across the entry
- 1bookCambridge English Pronouncing DictionaryPeter Roach — Cambridge University Press — 2011
- 3bookChristianity: Religions of the WorldKen Parry — Infobase Publishing — 2009
- 4bookThe Blackwell Companion to Eastern ChristianityKen Parry — John Wiley & Sons — 2010
- 6bookA History of Byzantine State and SocietyWarren Treadgold — Stanford University Press — 1997
- 8encyclopediaConstantinopleS. Vailhé — Robert Appleton Company — 1908
- 9bookPlacenames of the World: Origins and Meanings of the Names for 6,600 Countries, Cities, Territories, Natural Features, and Historic SitesAdrian Room — McFarland & Company — 2006
- 10bookThe Concise Oxford Dictionary of World Place NamesJohn Everett-Heath — Oxford University Press — 2019-10-24
- 11inlineBritannica, Istanbul .
- 12encyclopediaConstantinopleD. L. Wasson — 9 April 2013
- 14webOpinion The Hagia Sophia and Turkey's Neo-OttomanismFlorin George Calian — 2021-03-25
- 15bookCrusades: The Illustrated HistoryThomas F. Madden — University of Michigan Press — 2004
- 18bookThe Chronicle of John MalalasJohn Malalas — Brill — 1 January 1986
- 20bookSmarthistory Guide to Byzantine ArtEvan Freeman — 2021
- 22bookSmarthistory Guide to Byzantine ArtEvan Freeman — 2021
- 23webThe Pechenegs
- 24bookThe Cambridge Illustrated History of the Middle Ages: 950–1250Cambridge University Press — 1986
- 25bookConstantinus Stilbes PoemataConstantine Stilbes et al. — Walter de Gruyter — 2005
- 27bookByzantium: The Decline and FallJohn Julius Norwich — Penguin Books — 1996
- 28journalEpidemic waves of the Black Death in the Byzantine Empire (1347–1453 AD)Costas Tsiamis1 et al.
- 29webThe Black Death
- 30webHistory of Istanbul
- 31bookConstantinopleRoger Crowley — Faber & Faber — 18 April 2013
- 32bookConstantinople 1453: The end of ByzantiumDavid Nicolle — Praeger — 2005
- 43bookRussian Travelers to Constantinople in the Fourteenth and Fifteenth CenturiesGeorge P. Majeska — Dumbarton Oaks — 1984
- 44journalBetween the Islamic and Chinese Universal Empires: The Ottoman Empire, Ming Dynasty, and Global Age of ExplorationsYuan Julian Chen — 2021-10-11
- 45bookA History of Armenian Women's Writing, 1880–1922Victoria Rowe — Cambridge Scholars Press — 2003
- 46bookTastes of Byzantium: The Cuisine of a Legendary EmpireAndrew Dalby — I.B. Tauris
- 48citationOxford Dictionary of ByzantiumOxford University Press — 1991
- 49bookLes Kurdes: étude sociologique et historiqueVasiliĭ Petrovich Nikitin — Impr. nationale — 1956
- 50newsConstantinople
- 54bookEntre mémoire et pouvoir: L'espace syrien sous les derniers Omeyyades et les premiers AbbassidesAntoine Borrut — Brill — 2011
- 55bookProceedings of the 21st International Congress of Byzantine Studies: London, 21–26 August, 2006, Volume 1Ashgate Publishing, Ltd. — 2006