Constantinople, ; la, Cōnstantīnopolis, ; ota, قسطنطينيه, Ḳosṭanṭīnīye. (
see other names) became the capital of the
Roman Empire during the reign of
Constantine the Great
Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...
in 330. Following the collapse of the
Western Roman Empire in the late 5th century, Constantinople remained the capital of the Eastern Roman Empire (also known as the
Byzantine Empire; 330–1204 and 1261–1453), the
Latin Empire (1204–1261), and the
Ottoman Empire (1453–1922). Following the
Turkish War of Independence, the Turkish capital then moved to
Ankara. Officially renamed
Istanbul in the 1920s, the city is today the largest city and financial centre of
Turkey and the
largest city in Europe, straddling the
Bosporus strait
A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channe ...
, lying in both
Europe and
Asia.
In 324, after the Western and Eastern Roman Empires were reunited, the ancient city of
Byzantium
Byzantium () or Byzantion ( grc, Βυζάντιον) was an ancient Greek city in classical antiquity that became known as Constantinople in late antiquity and Istanbul today. The Greek name ''Byzantion'' and its Latinization ''Byzantium'' cont ...
was selected to serve as the new capital of the Roman Empire, and the city was renamed Nova Roma, or 'New Rome', by Emperor
Constantine the Great
Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...
. On 11 May 330, it was renamed Constantinople and dedicated to Constantine.
Constantinople is generally considered to be the center and the "cradle of Orthodox
Christian civilization". From the mid-5th century to the early 13th century, Constantinople was the largest and wealthiest city in Europe. The city became famous for its architectural masterpieces, such as
Hagia Sophia, the cathedral of the
Eastern Orthodox Church, which served as the seat of the
Ecumenical Patriarchate
The Ecumenical Patriarchate of Constantinople ( el, Οἰκουμενικὸν Πατριαρχεῖον Κωνσταντινουπόλεως, translit=Oikoumenikón Patriarkhíon Konstantinoupóleos, ; la, Patriarchatus Oecumenicus Constanti ...
; the sacred
Imperial Palace, where the emperors lived; the
Hippodrome; the
Golden Gate of the Land Walls; and opulent aristocratic palaces. The
University of Constantinople
The Imperial University of Constantinople, sometimes known as the University of the Palace Hall of Magnaura ( el, Πανδιδακτήριον τῆς Μαγναύρας), was an Eastern Roman educational institution that could trace its corporat ...
was founded in the 5th century and contained artistic and literary treasures before it was sacked in 1204 and 1453, including its vast
Imperial Library which contained the remnants of the
Library of Alexandria
The Great Library of Alexandria in Alexandria, Egypt, was one of the largest and most significant libraries of the ancient world. The Library was part of a larger research institution called the Mouseion, which was dedicated to the Muses, th ...
and had 100,000 volumes. The city was the home of the
Ecumenical Patriarch of Constantinople and guardian of
Christendom's holiest relics such as the
Crown of thorns and the
True Cross.

Constantinople was famous for its massive and complex fortifications, which ranked among the most sophisticated defensive architecture of
antiquity
Antiquity or Antiquities may refer to:
Historical objects or periods Artifacts
*Antiquities, objects or artifacts surviving from ancient cultures
Eras
Any period before the European Middle Ages (5th to 15th centuries) but still within the histo ...
. The
Theodosian Walls consisted of a double wall lying about to the west of the first wall and a moat with palisades in front. Constantinople's location between the
Golden Horn and the
Sea of Marmara reduced the land area that needed defensive walls. The city was built intentionally to rival
Rome, and it was claimed that several elevations within its walls matched Rome's 'seven hills'. The impenetrable defenses enclosed magnificent palaces, domes, and towers, the result of prosperity Constantinople achieved as the gateway between two continents (
Europe and
Asia) and two seas (the Mediterranean and the Black Sea). Although besieged on numerous occasions by various armies, the defenses of Constantinople proved impenetrable for nearly nine hundred years.
In 1204, however, the armies of the
Fourth Crusade
The Fourth Crusade (1202–1204) was a Latin Christian armed expedition called by Pope Innocent III. The stated intent of the expedition was to recapture the Muslim-controlled city of Jerusalem, by first defeating the powerful Egyptian Ayyubid S ...
took and devastated the city, and for several decades, its inhabitants resided under Latin occupation in a dwindling and depopulated city. In 1261 the Byzantine Emperor
Michael VIII Palaiologos liberated the city, and after the restoration under the
Palaiologos dynasty, it enjoyed a partial recovery. With the advent of the Ottoman Empire in 1299, the Byzantine Empire began to lose territories, and the city began to lose population. By the early 15th century, the Byzantine Empire was reduced to just Constantinople and its environs, along with
Morea in Greece, making it an enclave inside the Ottoman Empire. The city was finally
besieged and conquered by the Ottoman Empire in 1453, remaining under its control until the early 20th century, after which it was renamed Istanbul under the Empire's
successor state, Turkey.
Names
Before Constantinople
According to
Pliny the Elder in his ''
Natural History'', the first known name of a settlement on the site of Constantinople was ''Lygos'', a settlement likely of
Thracian origin founded between the 13th and 11th centuries BC. The site, according to the founding myth of the city, was abandoned by the time Greek settlers from the city-state of
Megara
Megara (; el, Μέγαρα, ) is a historic town and a municipality in West Attica, Greece. It lies in the northern section of the Isthmus of Corinth opposite the island of Salamis Island, Salamis, which belonged to Megara in archaic times, befo ...
founded ''
Byzantium
Byzantium () or Byzantion ( grc, Βυζάντιον) was an ancient Greek city in classical antiquity that became known as Constantinople in late antiquity and Istanbul today. The Greek name ''Byzantion'' and its Latinization ''Byzantium'' cont ...
'' ( grc, Βυζάντιον, ''Byzántion'') in around 657 BC,
across from the town of
Chalcedon on the Asiatic side of the Bosphorus.
The origins of the name of ''
Byzantion'', more commonly known by the later Latin ''Byzantium'', are not entirely clear, though some suggest it is of
Thracian origin.
[Georgacas, Demetrius John (1947). "The Names of Constantinople". ''Transactions and Proceedings of the American Philological Association'' (The Johns Hopkins University Press) 78: 347–67. . .] The founding myth of the city has it told that the settlement was named after the leader of the Megarian colonists,
Byzas. The later Byzantines of Constantinople themselves would maintain that the city was named in honor of two men, Byzas and Antes, though this was more likely just a play on the word
Byzantion.
The city was briefly renamed ''Augusta Antonina'' in the early 3rd century AD by the Emperor
Septimius Severus (193–211), who razed the city to the ground in 196 for supporting a
rival contender in the
civil war and had it rebuilt in honor of his son Marcus Aurelius Antoninus (who succeeded him as Emperor), popularly known as
Caracalla.
[Necdet Sakaoğlu (1993/94a): "İstanbul'un adları" The names of Istanbul" In: 'Dünden bugüne İstanbul ansiklopedisi', ed. Türkiye Kültür Bakanlığı, Istanbul.] The name appears to have been quickly forgotten and abandoned, and the city reverted to Byzantium/Byzantion after either the assassination of Caracalla in 217 or, at the latest, the fall of the
Severan dynasty in 235.
Names of Constantinople

Byzantium took on the name of Constantinople (
Greek: Κωνσταντινούπολις,
romanized
Romanization or romanisation, in linguistics, is the conversion of text from a different writing system to the Roman (Latin) script, or a system for doing so. Methods of romanization include transliteration, for representing written text, and ...
: ''Kōnstantinoupolis;'' "city of Constantine") after its refoundation under
Roman emperor Constantine I
Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to convert to Christianity. Born in Naissus, Dacia Mediterranea ...
, who transferred the capital of the
Roman Empire to Byzantium in 330 and designated his new capital officially as ''
Nova Roma
Nova Roma (Latin for 'New Rome") is an international Roman revivalist and reconstructionist organizationStrmiska, Michael: ''Modern Paganism in World Cultures: Comparative Perspectives'', pp. 335-36. ABC-CLIO, 2005 created in 1998 by Joseph Blo ...
'' () 'New Rome'. During this time, the city was also called 'Second Rome', 'Eastern Rome', and ''Roma Constantinopolitana'' (
Latin for 'Constantinopolitan Rome').
As the city became the sole remaining capital of the Roman Empire after the fall of the West, and its wealth, population, and influence grew, the city also came to have a multitude of nicknames.

As the largest and wealthiest city in Europe during the 4th–13th centuries and a center of culture and education of the Mediterranean basin, Constantinople came to be known by prestigious titles such as ''Basileuousa'' (Queen of Cities) and ''Megalopolis'' (the Great City) and was, in colloquial speech, commonly referred to as just ''Polis'' () 'the City' by Constantinopolitans and provincial Byzantines alike.
In the language of other peoples, Constantinople was referred to just as reverently. The medieval Vikings, who had contacts with the empire through their expansion in eastern Europe (
Varangians), used the Old Norse name ''Miklagarðr'' (from ''mikill'' 'big' and ''garðr'' 'city'), and later ''Miklagard'' and ''Miklagarth''.
In Arabic, the city was sometimes called ''Rūmiyyat al-Kubra'' (Great City of the Romans) and in Persian as ''Takht-e Rum'' (Throne of the Romans).
In East and South Slavic languages, including in
Kievan Rus', Constantinople has been referred to as ''
Tsargrad'' (''Царьград'') or ''Carigrad'', 'City of the Caesar (Emperor)', from the Slavonic words ''tsar'' ('Caesar' or 'King') and ''grad'' ('city'). This was presumably a
calque on a Greek phrase such as (''Vasileos Polis''), 'the city of the emperor
ing.
In
Persian the city was also called ''Asitane'' (the Threshold of the State), and in
Armenian, it was called ''Gosdantnubolis'' (City of Constantine).
Modern names of the city

The modern Turkish name for the city, ''
İstanbul'', derives from the
Greek phrase ''eis tin Polin'' (), meaning '(in)to the city'.
This name was used in colloquial speech in
Turkish
Turkish may refer to:
*a Turkic language spoken by the Turks
* of or about Turkey
** Turkish language
*** Turkish alphabet
** Turkish people, a Turkic ethnic group and nation
*** Turkish citizen, a citizen of Turkey
*** Turkish communities and mi ...
alongside ''Kostantiniyye'', the more formal adaptation of the original ''Constantinople'', during the period of
Ottoman rule, while western languages mostly continued to refer to the city as Constantinople until the early 20th century. In 1928,
the Turkish alphabet was changed from Arabic script to Latin script. After that, as part of the
Turkification movement, Turkey started to urge other countries to use
Turkish names for Turkish cities, instead of other transliterations to Latin script that had been used in Ottoman times and the city came to be known as Istanbul and its variations in most world languages.
[Stanford and Ezel Shaw (1977): History of the Ottoman Empire and Modern Turkey. Cambridge: Cambridge University Press. Vol II, p. 386; Robinson (1965), The First Turkish Republic, p. 298]
The name ''Constantinople'' is still used by members of the
Eastern Orthodox Church in the title of one of their most important leaders, the Orthodox
patriarch based in the city, referred to as "His Most Divine All-Holiness the Archbishop of Constantinople New Rome and Ecumenical Patriarch". In Greece today, the city is still called ''Konstantinoúpoli(s)'' () or simply just "the City" ().
History
Foundation of Byzantium
Constantinople was founded by the Roman emperor
Constantine I
Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to convert to Christianity. Born in Naissus, Dacia Mediterranea ...
(272–337) in 324
on the site of an already-existing city,
Byzantium
Byzantium () or Byzantion ( grc, Βυζάντιον) was an ancient Greek city in classical antiquity that became known as Constantinople in late antiquity and Istanbul today. The Greek name ''Byzantion'' and its Latinization ''Byzantium'' cont ...
, which was settled in the early days of
Greek colonial expansion, in around 657 BC, by colonists of the city-state of
Megara
Megara (; el, Μέγαρα, ) is a historic town and a municipality in West Attica, Greece. It lies in the northern section of the Isthmus of Corinth opposite the island of Salamis Island, Salamis, which belonged to Megara in archaic times, befo ...
. This is the first major settlement that would develop on the site of later Constantinople, but the first known settlements was that of ''Lygos'', referred to in Pliny's Natural Histories. Apart from this, little is known about this initial settlement. The site, according to the founding myth of the city, was abandoned by the time Greek settlers from the city-state of Megara founded Byzantium () in around 657 BC,
across from the town of Chalcedon on the Asiatic side of the Bosphorus.
Hesychius of Miletus wrote that some "claim that people from Megara, who derived their descent from Nisos, sailed to this place under their leader Byzas, and invent the fable that his name was attached to the city". Some versions of the founding myth say Byzas was the son of a local
nymph, while others say he was conceived by one of Zeus' daughters and
Poseidon. Hesychius also gives alternate versions of the city's founding legend, which he attributed to old poets and writers:
It is said that the first Argives, after having received this prophecy from Pythia,
Blessed are those who will inhabit that holy city,
a narrow strip of the Thracian shore at the mouth of the Pontos,
where two pups drink of the gray sea,
where fish and stag graze on the same pasture,
set up their dwellings at the place where the rivers Kydaros and Barbyses have their estuaries, one flowing from the north, the other from the west, and merging with the sea at the altar of the nymph called Semestre"
The city maintained independence as a city-state until it was annexed by
Darius I
Darius I ( peo, 𐎭𐎠𐎼𐎹𐎺𐎢𐏁 ; grc-gre, Δαρεῖος ; – 486 BCE), commonly known as Darius the Great, was a Persian ruler who served as the third King of Kings of the Achaemenid Empire, reigning from 522 BCE until his ...
in 512 BC into the
Persian Empire
The Achaemenid Empire or Achaemenian Empire (; peo, wikt:𐎧𐏁𐏂𐎶, 𐎧𐏁𐏂, , ), also called the First Persian Empire, was an History of Iran#Classical antiquity, ancient Iranian empire founded by Cyrus the Great in 550 BC. Bas ...
, who saw the site as the optimal location to construct a
pontoon bridge crossing into Europe as Byzantium was situated at the narrowest point in the Bosphorus strait. Persian rule lasted until 478 BC when as part of the Greek counterattack to the
Second Persian invasion of Greece
The second Persian invasion of Greece (480–479 BC) occurred during the Greco-Persian Wars, as King Xerxes I of Persia sought to conquer all of Greece. The invasion was a direct, if delayed, response to the defeat of the first Persian invasion ...
, a Greek army led by the Spartan general
Pausanias captured the city which remained an independent, yet subordinate, city under the Athenians, and later to the Spartans after 411 BC. A farsighted treaty with the emergent power of Rome in which stipulated tribute in exchange for independent status allowed it to enter Roman rule unscathed. This treaty would pay dividends retrospectively as Byzantium would maintain this independent status, and prosper under peace and stability in the
Pax Romana, for nearly three centuries until the late 2nd century AD.

Byzantium was never a major influential city-state like that of
Athens,
Corinth or
Sparta, but the city enjoyed relative peace and steady growth as a prosperous trading city lent by its remarkable position. The site lay astride the land route from
Europe to
Asia and the
seaway from the
Black Sea to the
Mediterranean, and had in the
Golden Horn an excellent and spacious harbor. Already then, in Greek and early Roman times, Byzantium was famous for the strategic geographic position that made it difficult to besiege and capture, and its position at the crossroads of the Asiatic-European trade route over land and as the gateway between the Mediterranean and Black Seas made it too valuable a settlement to abandon, as Emperor
Septimius Severus later realized when he razed the city to the ground for supporting
Pescennius Niger
Gaius Pescennius Niger (c. 135 – 194) was Roman Emperor from 193 to 194 during the Year of the Five Emperors. He claimed the imperial throne in response to the murder of Pertinax and the elevation of Didius Julianus, but was defeated by a riva ...
's
claimancy. It was a move greatly criticized by the contemporary consul and historian
Cassius Dio who said that Severus had destroyed "a strong Roman outpost and a base of operations against the barbarians from Pontus and Asia". He would later rebuild Byzantium towards the end of his reign, in which it would be briefly renamed ''Augusta Antonina'', fortifying it with a new city wall in his name, the Severan Wall.
324–337: The refoundation as Constantinople

Constantine had altogether more colourful plans. Having restored the unity of the Empire, and, being in the course of major governmental reforms as well as of
sponsoring the consolidation of the Christian church, he was well aware that Rome was an unsatisfactory capital. Rome was too far from the frontiers, and hence from the armies and the imperial courts, and it offered an undesirable playground for disaffected politicians. Yet it had been the capital of the state for over a thousand years, and it might have seemed unthinkable to suggest that the capital be moved to a different location. Nevertheless, Constantine identified the site of Byzantium as the right place: a place where an emperor could sit, readily defended, with easy access to the
Danube or the
Euphrates
The Euphrates () is the longest and one of the most historically important rivers of Western Asia. Tigris–Euphrates river system, Together with the Tigris, it is one of the two defining rivers of Mesopotamia ( ''the land between the rivers'') ...
frontiers, his court supplied from the rich gardens and sophisticated workshops of Roman Asia, his treasuries filled by the wealthiest provinces of the Empire.
Constantinople was built over six years, and consecrated on 11 May 330.
Constantine divided the expanded city, like Rome, into 14 regions, and ornamented it with public works worthy of an imperial metropolis. Yet, at first, Constantine's new Rome did not have all the dignities of old Rome. It possessed a
proconsul, rather than an
urban prefect. It had no
praetors,
tribunes
Tribune () was the title of various elected officials in ancient Rome. The two most important were the tribunes of the plebs and the military tribunes. For most of Roman history, a college of ten tribunes of the plebs acted as a check on the ...
, or
quaestors. Although it did have senators, they held the title ''clarus'', not ''
clarissimus
The constitution of the late Roman Empire was an unwritten set of guidelines and principles passed down, mainly through precedent, which defined the manner in which the late Roman Empire was governed. As a matter of historical convention, the late ...
'', like those of Rome. It also lacked the panoply of other administrative offices regulating the food supply, police, statues, temples, sewers, aqueducts, or other public works. The new programme of building was carried out in great haste: columns, marbles, doors, and tiles were taken wholesale from the temples of the empire and moved to the new city. In similar fashion, many of the greatest works of Greek and Roman art were soon to be seen in its squares and streets. The emperor stimulated private building by promising householders gifts of land from the imperial estates in
Asiana and
Pontica and on 18 May 332 he announced that, as in Rome, free distributions of food would be made to the citizens. At the time, the amount is said to have been 80,000 rations a day, doled out from 117 distribution points around the city.

Constantine laid out a new square at the centre of old Byzantium, naming it the
Augustaeum
The ''Augustaion'' ( el, ) or, in Latin, ''Augustaeum'', was an important ceremonial square in ancient and medieval Constantinople (modern Istanbul, Turkey), roughly corresponding to the modern ''Aya Sofya Meydanı'' ( Turkish, "Hagia Sophia Squar ...
. The new senate-house (or Curia) was housed in a basilica on the east side. On the south side of the great square was erected the
Great Palace
The Great Palace of Constantinople ( el, Μέγα Παλάτιον, ''Méga Palátion''; Latin: ''Palatium Magnum''), also known as the Sacred Palace ( el, Ἱερὸν Παλάτιον, ''Hieròn Palátion''; Latin: ''Sacrum Palatium''), was th ...
of the Emperor with its imposing entrance, the
Chalke
The Chalke Gate ( el, ), was the main ceremonial entrance ( vestibule) to the Great Palace of Constantinople in the Byzantine period. The name, which means "the Bronze Gate", was given to it either because of the bronze portals or from the gild ...
, and its ceremonial suite known as the
Palace of Daphne
The Palace of Daphne ( el, Δάφνη) was one of the major wings of the Great Palace of Constantinople, the capital of the Byzantine Empire (modern Istanbul, Turkey). According to George Codinus, it was named after a statue of the nymph Daphne, b ...
. Nearby was the vast
Hippodrome for chariot-races, seating over 80,000 spectators, and the famed
Baths of Zeuxippus. At the western entrance to the Augustaeum was the
Milion, a vaulted monument from which distances were measured across the Eastern Roman Empire.
From the Augustaeum led a great street, the
Mese, lined with colonnades. As it descended the First Hill of the city and climbed the Second Hill, it passed on the left the
Praetorium
The Latin term (also and ) originally identified the tent of a general within a Roman castrum (encampment), and derived from the title praetor, which identified a Roman magistrate.Smith, William. Dictionary of Greek and Roman Antiquities, 2 ed., ...
or law-court. Then it passed through the oval
Forum of Constantine
The Forum of Constantine ( el, Φόρος Κωνσταντίνου, Fóros Konstantínou; la, Forum Constantini) was built at the foundation of Constantinople immediately outside the old city walls of Byzantium. It marked the centre of the new c ...
where there was a second Senate-house and a
high column with a statue of Constantine himself in the guise of
Helios
In ancient Greek religion and Greek mythology, mythology, Helios (; grc, , , Sun; Homeric Greek: ) is the deity, god and personification of the Sun (Solar deity). His name is also Latinized as Helius, and he is often given the epithets Hyper ...
, crowned with a halo of seven rays and looking toward the rising sun. From there, the Mese passed on and through the
Forum Tauri
The Forum of Theodosius ( el, φόρος Θεοδοσίου, today Beyazıt Square) was probably the largest square in Constantinople and stood on the Mese, the major road that ran west from Hagia Sophia ( Turkish: Ayasofya). It was originally bu ...
and then the
Forum Bovis
The Forum of the Ox ( la, Forum Bovis, gr, ὁ Bοῦς, meaning "the Ox") was a public square ( la, Forum) in the city of Constantinople (today's Istanbul). Used also a place for public executions and torture, it disappeared completely after the ...
, and finally up the Seventh Hill (or Xerolophus) and through to the Golden Gate in the
Constantinian Wall. After the construction of the
Theodosian Walls in the early 5th century, it was extended to the new
Golden Gate, reaching a total length of seven
Roman miles. After the construction of the Theodosian Walls, Constantinople consisted of an area approximately the size of Old Rome within the Aurelian walls, or some 1,400 ha.
337–529: Constantinople during the Barbarian Invasions and the fall of the West

The importance of Constantinople increased, but it was gradual. From the death of Constantine in 337 to the accession of
Theodosius I, emperors had been resident only in the years 337–338, 347–351, 358–361, 368–369. Its status as a capital was recognized by the appointment of the first known Urban Prefect of the City Honoratus, who held office from 11 December 359 until 361. The urban prefects had concurrent jurisdiction over three provinces each in the adjacent dioceses of Thrace (in which the city was located), Pontus and Asia comparable to the 100-mile extraordinary jurisdiction of the prefect of Rome. The emperor
Valens, who hated the city and spent only one year there, nevertheless built the Palace of
Hebdomon on the shore of the
Propontis
The Sea of Marmara,; grc, Προποντίς, Προποντίδα, Propontís, Propontída also known as the Marmara Sea, is an inland sea located entirely within the borders of Turkey. It connects the Black Sea to the Aegean Sea via the ...
near the
Golden Gate, probably for use when reviewing troops. All the emperors up to
Zeno and
Basiliscus were crowned and acclaimed at the Hebdomon. Theodosius I founded the
Church of John the Baptist to house the skull of the saint (today preserved at the
Topkapı Palace), put up a memorial pillar to himself in the Forum of Taurus, and turned the ruined temple of
Aphrodite into a coach house for the
Praetorian Prefect
The praetorian prefect ( la, praefectus praetorio, el, ) was a high office in the Roman Empire. Originating as the commander of the Praetorian Guard, the office gradually acquired extensive legal and administrative functions, with its holders be ...
;
Arcadius built a new forum named after himself on the Mese, near the walls of Constantine.
After the shock of the
Battle of Adrianople in 378, in which the emperor
Valens with the flower of the Roman armies was destroyed by the
Visigoths within a few days' march, the city looked to its defences, and in 413–414
Theodosius II built the 18-metre (60-foot)-tall
triple-wall fortifications, which were not to be breached until the coming of gunpowder. Theodosius also founded a
University near the Forum of Taurus, on 27 February 425.
Uldin, a prince of the
Huns, appeared on the Danube about this time and advanced into Thrace, but he was deserted by many of his followers, who joined with the Romans in driving their king back north of the river. Subsequent to this, new walls were built to defend the city and the fleet on the Danube improved.

After the
barbarian
A barbarian (or savage) is someone who is perceived to be either Civilization, uncivilized or primitive. The designation is usually applied as a generalization based on a popular stereotype; barbarians can be members of any nation judged by som ...
s overran the Western Roman Empire, Constantinople became the indisputable capital city of the Roman Empire. Emperors were no longer peripatetic between various court capitals and palaces. They remained in their palace in the Great City and sent generals to command their armies. The wealth of the eastern Mediterranean and western Asia flowed into Constantinople.
527–565: Constantinople in the Age of Justinian

The emperor
Justinian I (527–565) was known for his successes in war, for his legal reforms and for his public works. It was from Constantinople that his expedition for the reconquest of the former Diocese of Africa set sail on or about 21 June 533. Before their departure, the ship of the commander
Belisarius was anchored in front of the Imperial palace, and the Patriarch offered prayers for the success of the enterprise. After the victory, in 534, the
Temple treasure of Jerusalem, looted by the Romans in
AD 70 and taken to
Carthage by the
Vandals after their sack of Rome in 455, was brought to Constantinople and deposited for a time, perhaps in the
Church of St Polyeuctus
The Church of St. Polyeuctus (; tr, Ayios Polieuktos Kilisesi) was an ancient Byzantine church in Constantinople (now Istanbul, Turkey) built by the noblewoman Anicia Juliana and dedicated to Saint Polyeuctus. Intended as an assertion of Julia ...
, before being returned to
Jerusalem in either the
Church of the Resurrection or the New Church.
Chariot-racing had been important in Rome for centuries. In Constantinople, the hippodrome became over time increasingly a place of political significance. It was where (as a shadow of the popular elections of old Rome) the people by acclamation showed their approval of a new emperor, and also where they openly criticized the government, or clamoured for the removal of unpopular ministers. It played a crucial role during the riots and in times of political unrest. The Hippodrome provided a space for a crowd to be responded to positively or where the acclamations of a crowd were subverted, resorting to the riots that would ensue in coming years. In the time of Justinian, public order in Constantinople became a critical political issue.

Throughout the late Roman and early Byzantine periods, Christianity was resolving fundamental questions of identity, and the dispute between the
orthodox
Orthodox, Orthodoxy, or Orthodoxism may refer to:
Religion
* Orthodoxy, adherence to accepted norms, more specifically adherence to creeds, especially within Christianity and Judaism, but also less commonly in non-Abrahamic religions like Neo-pag ...
and the
monophysites became the cause of serious disorder, expressed through allegiance to the chariot-racing parties of the Blues and the Greens. The partisans of the Blues and the Greens were said to affect untrimmed facial hair, head hair shaved at the front and grown long at the back, and wide-sleeved tunics tight at the wrist; and to form gangs to engage in night-time muggings and street violence. At last these disorders took the form of a major rebellion of 532, known as the
"Nika" riots (from the battle-cry of "Conquer!" of those involved). The
Nika Riots began in the Hippodrome and finished there with the onslaught of over 30,000 people according to Procopius, those in the blue and green factions, innocent and guilty. This came full circle on the relationship within the Hippodrome between the power and the people during the time of Justinian.
Fires started by the Nika rioters consumed the Theodosian basilica of Hagia Sophia (Holy Wisdom), the city's cathedral, which lay to the north of the Augustaeum and had itself replaced the Constantinian basilica founded by Constantius II to replace the first Byzantine cathedral,
Hagia Irene (Holy Peace). Justinian commissioned
Anthemius of Tralles and
Isidore of Miletus to replace it with a new and incomparable
Hagia Sophia. This was the great cathedral of the city, whose dome was said to be held aloft by God alone, and which was directly connected to the palace so that the imperial family could attend services without passing through the streets. The dedication took place on 26 December 537 in the presence of the emperor, who was later reported to have exclaimed, "O
Solomon
Solomon (; , ),, ; ar, سُلَيْمَان, ', , ; el, Σολομών, ; la, Salomon also called Jedidiah (Hebrew language, Hebrew: , Modern Hebrew, Modern: , Tiberian Hebrew, Tiberian: ''Yăḏīḏăyāh'', "beloved of Yahweh, Yah"), ...
, I have outdone thee!" Hagia Sophia was served by 600 people including 80 priests, and cost 20,000 pounds of gold to build.
Justinian also had Anthemius and Isidore demolish and replace the original
Church of the Holy Apostles and Hagia Irene built by Constantine with new churches under the same dedication. The Justinianic Church of the Holy Apostles was designed in the form of an equal-armed cross with five domes, and ornamented with beautiful mosaics. This church was to remain the burial place of the emperors from Constantine himself until the 11th century. When the city fell to the Turks in 1453, the church was demolished to make room for the tomb of
Mehmet II the Conqueror. Justinian was also concerned with other aspects of the city's built environment, legislating against the abuse of laws prohibiting building within of the sea front, in order to protect the view.
During Justinian I's reign, the city's population reached about 500,000 people. However, the social fabric of Constantinople was also damaged by the onset of the
Plague of Justinian between 541 and 542 AD. It killed perhaps 40% of the city's inhabitants.
Survival, 565–717: Constantinople during the Byzantine Dark Ages
In the early 7th century, the
Avars and later the
Bulgars
The Bulgars (also Bulghars, Bulgari, Bolgars, Bolghars, Bolgari, Proto-Bulgarians) were Turkic semi-nomadic warrior tribes that flourished in the Pontic–Caspian steppe and the Volga region during the 7th century. They became known as nomad ...
overwhelmed much of the
Balkans, threatening Constantinople with attack from the west. Simultaneously, the
Persian
Sassanids overwhelmed the Prefecture of the East and penetrated deep into
Anatolia.
Heraclius
Heraclius ( grc-gre, Ἡράκλειος, Hērákleios; c. 575 – 11 February 641), was List of Byzantine emperors, Eastern Roman emperor from 610 to 641. His rise to power began in 608, when he and his father, Heraclius the Elder, the Exa ...
, son of the
exarch
An exarch (;
from Ancient Greek ἔξαρχος ''exarchos'', meaning “leader”) was the holder of any of various historical offices, some of them being political or military and others being ecclesiastical.
In the late Roman Empire and ea ...
of Africa, set sail for the city and assumed the throne. He found the military situation so dire that he is said to have contemplated withdrawing the imperial capital to Carthage, but relented after the people of Constantinople begged him to stay. The citizens lost their right to free grain in 618 when Heraclius realized that the city could no longer be supplied from Egypt as a result of the Persian wars: the population fell substantially as a result.

While the city withstood a
siege by the Sassanids and Avars in 626, Heraclius campaigned deep into Persian territory and briefly restored the ''status quo'' in 628, when the Persians surrendered all their conquests. However, further sieges followed the
Arab conquests
The early Muslim conquests or early Islamic conquests ( ar, الْفُتُوحَاتُ الإسْلَامِيَّة, ), also referred to as the Arab conquests, were initiated in the 7th century by Muhammad, the main Islamic prophet. He estab ...
, first from
674 to 678 and then in
717 to 718. The
Theodosian Walls kept the city impenetrable from the land, while a newly discovered incendiary substance known as
Greek fire
Greek fire was an incendiary weapon used by the Eastern Roman Empire beginning . Used to set fire to enemy ships, it consisted of a combustible compound emitted by a flame-throwing weapon. Some historians believe it could be ignited on contact w ...
allowed the
Byzantine navy
The Byzantine navy was the naval force of the East Roman or Byzantine Empire. Like the empire it served, it was a direct continuation from its Imperial Roman predecessor, but played a far greater role in the defence and survival of the state than ...
to destroy the Arab fleets and keep the city supplied. In the second siege, the second ruler of
Bulgaria,
Khan Tervel
Khan Tervel ( bg, Тервел) also called ''Tarvel'', or ''Terval'', or ''Terbelis'' in some Byzantine sources, was the khan of Bulgaria during the First Bulgarian Empire at the beginning of the 8th century. In 705 Emperor Justinian II named ...
, rendered decisive help. He was called ''Saviour of Europe''.
717–1025: Constantinople during the Macedonian Renaissance

In the 730s
Leo III Leo III, Leon III, or Levon III may refer to:
; People
* Leo III the Isaurian (685-741), Byzantine emperor 717-741
* Pope Leo III (d. 816), Pope 795-816
* Leon III of Abkhazia, King of Abkhazia 960–969
* Leo II, King of Armenia (c. 1236–1289), ...
carried out extensive repairs of the Theodosian walls, which had been damaged by frequent and violent attacks; this work was financed by a special tax on all the subjects of the Empire.
Theodora, widow of the Emperor
Theophilus (died 842), acted as regent during the minority of her son
Michael III
Michael III ( grc-gre, Μιχαήλ; 9 January 840 – 24 September 867), also known as Michael the Drunkard, was Byzantine Emperor from 842 to 867. Michael III was the third and traditionally last member of the Amorian (or Phrygian) dynasty. ...
, who was said to have been introduced to dissolute habits by her brother Bardas. When Michael assumed power in 856, he became known for excessive drunkenness, appeared in the hippodrome as a charioteer and burlesqued the religious processions of the clergy. He removed Theodora from the Great Palace to the Carian Palace and later to the
monastery of Gastria, but, after the death of Bardas, she was released to live in the palace of St Mamas; she also had a rural residence at the Anthemian Palace, where Michael was assassinated in 867.
In 860, an
attack
Attack may refer to:
Warfare and combat
* Offensive (military)
* Charge (warfare)
* Attack (fencing)
* Strike (attack)
* Attack (computing)
* Attack aircraft
Books and publishing
* ''The Attack'' (novel), a book
* '' Attack No. 1'', comic an ...
was made on the city by a new principality set up a few years earlier at
Kiev
Kyiv, also spelled Kiev, is the capital and most populous city of Ukraine. It is in north-central Ukraine along the Dnieper, Dnieper River. As of 1 January 2021, its population was 2,962,180, making Kyiv the List of European cities by populat ...
by
Askold and Dir, two
Varangian chiefs: Two hundred small vessels passed through the Bosporus and plundered the monasteries and other properties on the suburban
Princes' Islands.
Oryphas, the admiral of the Byzantine fleet, alerted the emperor Michael, who promptly put the invaders to flight; but the suddenness and savagery of the onslaught made a deep impression on the citizens.
In 980, the emperor
Basil II received an unusual gift from Prince
Vladimir of Kiev: 6,000
Varangian warriors, which Basil formed into a new bodyguard known as the
Varangian Guard. They were known for their ferocity, honour, and loyalty. It is said that, in 1038, they were dispersed in winter quarters in the
Thracesian Theme when one of their number attempted to violate a countrywoman, but in the struggle she seized his sword and killed him; instead of taking revenge, however, his comrades applauded her conduct, compensated her with all his possessions, and exposed his body without burial as if he had committed suicide. However, following the death of an Emperor, they became known also for plunder in the Imperial palaces. Later in the 11th century the Varangian Guard became dominated by
Anglo-Saxons who preferred this way of life to subjugation by the
new Norman kings of England.

The ''
Book of the Eparch
The ''Book of the Prefect'' or ''Eparch'' ( gr, Τὸ ἐπαρχικὸν βιβλίον, To eparchikon biblion) is a Byzantine commercial manual or guide addressed to the eparch of Constantinople (the governor of the city with supreme judicial ju ...
'', which dates to the 10th century, gives a detailed picture of the city's commercial life and its organization at that time. The corporations in which the tradesmen of Constantinople were organised were supervised by the Eparch, who regulated such matters as production, prices, import, and export. Each guild had its own monopoly, and tradesmen might not belong to more than one. It is an impressive testament to the strength of tradition how little these arrangements had changed since the office, then known by the Latin version of its title, had been set up in 330 to mirror the urban prefecture of Rome.
In the 9th and 10th centuries, Constantinople had a population of between 500,000 and 800,000.
Iconoclast controversy in Constantinople
In the 8th and 9th centuries, the
iconoclast movement caused serious political unrest throughout the Empire. The emperor
Leo III Leo III, Leon III, or Levon III may refer to:
; People
* Leo III the Isaurian (685-741), Byzantine emperor 717-741
* Pope Leo III (d. 816), Pope 795-816
* Leon III of Abkhazia, King of Abkhazia 960–969
* Leo II, King of Armenia (c. 1236–1289), ...
issued a decree in 726 against images, and ordered the destruction of a statue of Christ over one of the doors of the Chalke, an act that was fiercely resisted by the citizens.
Constantine V convoked a
church council in 754, which condemned the worship of images, after which many treasures were broken, burned, or painted over with depictions of trees, birds or animals: One source refers to the
church of the Holy Virgin at
Blachernae
Blachernae ( gkm, Βλαχέρναι) was a suburb in the northwestern section of Constantinople, the capital city of the Byzantine Empire. It is the site of a water source and a number of prominent churches were built there, most notably the great ...
as having been transformed into a "fruit store and aviary". Following the death of her husband
Leo IV in 780, the empress
Irene
Irene is a name derived from εἰρήνη (eirēnē), the Greek for "peace".
Irene, and related names, may refer to:
* Irene (given name)
Places
* Irene, Gauteng, South Africa
* Irene, South Dakota, United States
* Irene, Texas, United Stat ...
restored the veneration of images through the agency of the
Second Council of Nicaea in 787.
The iconoclast controversy returned in the early 9th century, only to be resolved once more in 843 during the regency of Empress
Theodora, who restored the icons. These controversies contributed to the deterioration of relations between the
Western and the
Eastern Churches.
1025–1081: Constantinople after Basil II

In the late 11th century catastrophe struck with the unexpected and calamitous defeat of the imperial armies at the
Battle of Manzikert
The Battle of Manzikert or Malazgirt was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 near Manzikert, theme of Iberia (modern Malazgirt in Muş Province, Turkey). The decisive defeat of the Byzantine army and th ...
in Armenia in 1071. The Emperor
Romanus Diogenes was captured. The peace terms demanded by
Alp Arslan
Alp Arslan was the second Sultan of the Seljuk Empire and great-grandson of Seljuk, the eponymous founder of the dynasty. He greatly expanded the Seljuk territory and consolidated his power, defeating rivals to the south and northwest, and his v ...
, sultan of the Seljuk Turks, were not excessive, and Romanus accepted them. On his release, however, Romanus found that enemies had placed their own candidate on the throne in his absence; he surrendered to them and suffered death by torture, and the new ruler,
Michael VII
Michael VII Doukas or Ducas ( gr, Μιχαήλ Δούκας), nicknamed Parapinakes ( gr, Παραπινάκης, lit. "minus a quarter", with reference to the devaluation of the Byzantine currency under his rule), was the senior Byzantine e ...
Ducas, refused to honour the treaty. In response, the Turks began to move into Anatolia in 1073. The collapse of the old defensive system meant that they met no opposition, and the empire's resources were distracted and squandered in a series of civil wars. Thousands of
Turkoman tribesmen crossed the unguarded frontier and moved into Anatolia. By 1080, a huge area had been lost to the Empire, and the Turks were within striking distance of Constantinople.
1081–1185: Constantinople under the Comneni

Under the Comnenian dynasty (1081–1185), Byzantium staged a remarkable recovery. In 1090–91, the nomadic
Pechenegs reached the walls of Constantinople, where Emperor Alexius I with the aid of the
Kipchaks
The Kipchaks or Qipchaks, also known as Kipchak Turks or Polovtsians, were a Turkic nomadic people and confederation that existed in the Middle Ages, inhabiting parts of the Eurasian Steppe. First mentioned in the 8th century as part of the Se ...
annihilated their army. In response to a call for aid from
Alexius, the
First Crusade assembled at Constantinople in 1096, but declining to put itself under Byzantine command set out for
Jerusalem on its own account.
John II built the monastery of the Pantocrator (Almighty) with a hospital for the poor of 50 beds.
With the restoration of firm central government, the empire became fabulously wealthy. The population was rising (estimates for Constantinople in the 12th century vary from some 100,000 to 500,000), and towns and cities across the realm flourished. Meanwhile, the volume of money in circulation dramatically increased. This was reflected in Constantinople by the construction of the Blachernae palace, the creation of brilliant new works of art, and general prosperity at this time: an increase in trade, made possible by the growth of the Italian city-states, may have helped the growth of the economy. It is certain that the
Venetians and others were active traders in Constantinople, making a living out of shipping goods between the Crusader Kingdoms of
Outremer and the West, while also trading extensively with Byzantium and
Egypt. The Venetians had factories on the north side of the Golden Horn, and large numbers of westerners were present in the city throughout the 12th century. Toward the end of
Manuel I Komnenos
Manuel I Komnenos ( el, Μανουήλ Κομνηνός, translit=Manouíl Komnenos, translit-std=ISO; 28 November 1118 – 24 September 1180), Romanization of Greek, Latinized Comnenus, also called Porphyrogennetos (; "born in the purple"), w ...
's reign, the number of foreigners in the city reached about 60,000–80,000 people out of a total population of about 400,000 people.
[J. Phillips, ''The Fourth Crusade and the Sack of Constantinople'', 144.] In 1171, Constantinople also contained a small community of 2,500 Jews.
[J. Phillips, ''The Fourth Crusade and the Sack of Constantinople'', 155.] In 1182, most Latin (Western European) inhabitants of Constantinople
were massacred.
In artistic terms, the 12th century was a very productive period. There was a revival in the
mosaic art, for example: Mosaics became more realistic and vivid, with an increased emphasis on depicting three-dimensional forms. There was an increased demand for art, with more people having access to the necessary wealth to commission and pay for such work.
1185–1261: Constantinople during the Imperial Exile

On 25 July 1197, Constantinople was struck by a
severe fire which burned the Latin Quarter and the area around the Gate of the Droungarios ( tr, Odun Kapısı) on the Golden Horn.
Nevertheless, the destruction wrought by the 1197 fire paled in comparison with that brought by the Crusaders. In the course of a plot between
Philip of Swabia
Philip of Swabia (February/March 1177 – 21 June 1208) was a member of the House of Hohenstaufen and King of Germany from 1198 until his assassination.
The death of his older brother Emperor Henry VI in 1197 meant that the Hohenstaufen rule (whi ...
,
Boniface of Montferrat and the
Doge of Venice, the
Fourth Crusade
The Fourth Crusade (1202–1204) was a Latin Christian armed expedition called by Pope Innocent III. The stated intent of the expedition was to recapture the Muslim-controlled city of Jerusalem, by first defeating the powerful Egyptian Ayyubid S ...
was, despite papal excommunication, diverted in 1203 against Constantinople, ostensibly promoting the claims of
Alexios IV Angelos brother-in-law of Philip, son of the deposed emperor
Isaac II Angelos. The reigning emperor
Alexios III Angelos
Alexios III Angelos ( gkm, Ἀλέξιος Κομνηνός Ἄγγελος, Alexios Komnēnos Angelos; 1211), Latinized as Alexius III Angelus, was Byzantine Emperor from March 1195 to 17/18 July 1203. He reigned under the name Alexios Komnen ...
had made no preparation. The Crusaders occupied
Galata
Galata is the former name of the Karaköy neighbourhood in Istanbul, which is located at the northern shore of the Golden Horn. The district is connected to the historic Fatih district by several bridges that cross the Golden Horn, most notabl ...
, broke the boom (navigational barrier), defensive chain protecting the
Golden Horn, and entered the harbour, where on 27 July they breached the sea walls: Alexios III fled. But the new Alexios IV Angelos found the Treasury inadequate, and was unable to make good the rewards he had promised to his western allies. Tension between the citizens and the Latin soldiers increased. In January 1204, the ''protovestiarius'' Alexios V Doukas, Alexios Murzuphlos provoked a riot, it is presumed, to intimidate Alexios IV, but whose only result was the destruction of the great statue of Athena Promachos, the work of Phidias, which stood in the principal forum facing west.
In February 1204, the people rose again: Alexios IV was imprisoned and executed, and Murzuphlos took the purple as Alexios V Doukas. He made some attempt to repair the walls and organise the citizenry, but there had been no opportunity to bring in troops from the provinces and the guards were demoralised by the revolution. An attack by the Crusaders on 6 April failed, but a second from the Golden Horn on 12 April succeeded, and the invaders poured in. Alexios V fled. The Senate met in
Hagia Sophia and offered the crown to Theodore I Laskaris, Theodore Lascaris, who had married into the Angelos dynasty, but it was too late. He came out with the Patriarch to the Milion, Golden Milestone before the Great Palace and addressed the
Varangian Guard. Then the two of them slipped away with many of the nobility and embarked for Asia. By the next day the Doge and the leading Franks were installed in the Great Palace, and the city was given over to pillage for three days.
Sir Steven Runciman, historian of the Crusades, wrote that the sack of Constantinople is "unparalleled in history".
For the next half-century, Constantinople was the seat of the
Latin Empire. Under the rulers of the Latin Empire, the city declined, both in population and the condition of its buildings. Alice-Mary Talbot cites an estimated population for Constantinople of 400,000 inhabitants; after the destruction wrought by the Crusaders on the city, about one third were homeless, and numerous courtiers, nobility, and higher clergy, followed various leading personages into exile. "As a result Constantinople became seriously depopulated," Talbot concludes.
[Talbot]
"The Restoration of Constantinople under Michael VIII"
, ''Dumbarton Oaks Papers'', 47 (1993), p. 246

The Latins took over at least 20 churches and 13 monasteries, most prominently the Hagia Sophia, which became the cathedral of the Latin Patriarch of Constantinople. It is to these that E.H. Swift attributed the construction of a series of flying buttresses to shore up the walls of the church, which had been weakened over the centuries by earthquake tremors. However, this act of maintenance is an exception: for the most part, the Latin occupiers were too few to maintain all of the buildings, either secular and sacred, and many became targets for vandalism or dismantling. Bronze and lead were removed from the roofs of abandoned buildings and melted down and sold to provide money to the chronically under-funded Empire for defense and to support the court; Deno John Geanokoplos writes that "it may well be that a division is suggested here: Latin laymen stripped secular buildings, ecclesiastics, the churches." Buildings were not the only targets of officials looking to raise funds for the impoverished Latin Empire: the monumental sculptures which adorned the Hippodrome and fora of the city were pulled down and melted for coinage. "Among the masterpieces destroyed, writes Talbot, "were a Herakles attributed to the fourth-century B.C. sculptor Lysippos, and monumental figures of Hera, Paris, and Helen."
[Talbot, "Restoration of Constantinople", p. 248]
The Nicaean emperor John III Vatatzes reportedly saved several churches from being dismantled for their valuable building materials; by sending money to the Latins "to buy them off" (''exonesamenos''), he prevented the destruction of several churches. According to Talbot, these included the churches of Blachernae, Rouphinianai, and St. Michael at Anaplous. He also granted funds for the restoration of the
Church of the Holy Apostles, which had been seriously damaged in an earthquake.
The Byzantine nobility scattered, many going to Empire of Nicaea, Nicaea, where Theodore Lascaris set up an imperial court, or to Despotate of Epirus, Epirus, where Theodore Angelus did the same; others fled to Empire of Trebizond, Trebizond, where one of the Comneni had already with Georgian support established an independent seat of empire. Nicaea and Epirus both vied for the imperial title, and tried to recover Constantinople. In 1261, Constantinople was Reconquest of Constantinople, captured from its last Latin ruler, Baldwin II of Constantinople, Baldwin II, by the forces of the Nicaean Empire, Nicaean emperor
Michael VIII Palaiologos under the command of Caesar Alexios Strategopoulos.
1261–1453: Palaiologan Era and the Fall of Constantinople

Although Constantinople was retaken by
Michael VIII Palaiologos, the Empire had lost many of its key economic resources, and struggled to survive. The palace of Blachernae in the north-west of the city became the main Imperial residence, with the old Great Palace on the shores of the
Bosporus going into decline. When Michael VIII captured the city, its population was 35,000 people, but, by the end of his reign, he had succeeded in increasing the population to about 70,000 people.
[T. Madden, ''Crusades: The Illustrated History'', 113.] The Emperor achieved this by summoning former residents who had fled the city when the crusaders captured it, and by relocating Greeks from the recently reconquered Peloponnese to the capital.
Military defeats, civil wars, earthquakes and natural disasters were joined by the Black Death, which in 1347 spread to Constantinople, exacerbated the people's sense that they were doomed by God. In 1453, when the Ottoman Turks Fall of Constantinople, captured the city, it contained approximately 50,000 people.
Constantinople was conquered by the
Ottoman Empire on 29 May 1453. Mehmed II intended to complete his father's mission and conquer Constantinople for the Ottomans. In 1452 he reached peace treaties with Hungary and Venice. He also began the construction of the Boğazkesen (later called the Rumelihisarı), a fortress at the narrowest point of the Bosphorus Strait, in order to restrict passage between the Black and Mediterranean seas. Mehmed then tasked the Hungarian gunsmith Urban with both arming Rumelihisarı and building cannon powerful enough to bring down the walls of Constantinople. By March 1453 Urban's cannon had been transported from the Ottoman capital of Edirne to the outskirts of Constantinople. In April, having quickly seized Byzantine coastal settlements along the Black Sea and Sea of Marmara, Ottoman regiments in Rumelia and Anatolia assembled outside the Byzantine capital. Their fleet moved from Gallipoli to nearby Diplokionion, and the sultan himself set out to meet his army.
The Ottomans were commanded by 21-year-old Ottoman Sultan Mehmed II. The conquest of Constantinople followed a seven-week siege which had begun on 6 April 1453. The Empire fell on 29 May 1453.
1453–1930: Ottoman and Republican Kostantiniyye

The Christian Orthodox city of Constantinople was now under Ottoman control. As tradition followed for the region, Ottoman soldiers had three days to pillage the city. When Mehmed II on the second day entered Constantinople through the Gate of Charisius (today known as Edirnekapı or Adrianople Gate), it is said that first thing he did was ride his horse to
Hagia Sophia, which was not in good shape even though it was avoided in the pillage by strict orders. Displeased by the pillaging, Mehmed II ordered it to end, for it will be the capital of his empire. He then ordered that an imam meet him in Hagia Sophia in order to chant the adhan thus transforming the Eastern Orthodoxy, Orthodox cathedral into a Muslim mosque,
[Mansel, Philip. ''Constantinople: City of the World's Desire''. Penguin History Travel, . p. 1.] solidifying Islamic rule in Constantinople.
Mehmed's main concern with Constantinople had to do with consolidating control over the city and rebuilding its defenses. After 45,000 captives were marched from the city, building projects were commenced immediately after the conquest, which included the repair of the walls, construction of the citadel, and building a new palace.
[Inalcik, Halil. "The Policy of Mehmed II toward the Greek Population of Istanbul and the Byzantine Buildings of the City." Dumbarton Oaks Papers 23, (1969): 229–249. p. 236] Mehmed issued orders across his empire that Muslims, Christians, and Jews should resettle the city, with Christians and Jews required to pay ''jizya'' and Muslims pay Zakat; he demanded that five thousand households needed to be transferred to Constantinople by September.
From all over the Islamic empire, prisoners of war and deported people were sent to the city: these people were called "Sürgün" in Turkish ( gr, σουργούνιδες).
[Müller-Wiener (1977), p. 28] Two centuries later, Ottoman traveler Evliya Çelebi gave a list of groups introduced into the city with their respective origins. Even today, many quarters of
Istanbul, such as Aksaray, Istanbul, Aksaray, Çarşamba, Istanbul, Çarşamba, bear the names of the places of origin of their inhabitants.
However, many people escaped again from the city, and there were several outbreaks of plague, so that in 1459 Mehmed allowed the deported Greeks to come back to the city.
Culture

Constantinople was the largest and richest urban center in the Eastern Mediterranean Sea during the late Eastern Roman Empire, mostly as a result of its strategic position commanding the trade routes between the Aegean Sea and the Black Sea. It would remain the capital of the eastern, Greek-speaking empire for over a thousand years and in some ways is the nexus of Byzantine art production. At its peak, roughly corresponding to the Middle Ages, it was one of the richest and largest cities in Europe. It exerted a powerful cultural pull and dominated much of the economic life in the Mediterranean. Visitors and merchants were especially struck by the beautiful monasteries and churches of the city, in particular the
Hagia Sophia, or the Church of Holy Wisdom. According to Russian 14th-century traveler Stephen of Novgorod: "As for Hagia Sophia, the human mind can neither tell it nor make description of it."
It was especially important for preserving in its libraries manuscripts of Greek and Latin authors throughout a period when instability and disorder caused their mass-destruction in western Europe and north Africa: On the city's fall, thousands of these were brought by refugees to Italy, and played a key part in stimulating the Renaissance, and the transition to the modern world. The cumulative influence of the city on the west, over the many centuries of its existence, is incalculable. In terms of technology, art and culture, as well as sheer size, Constantinople was without parallel anywhere in Europe for a thousand years. Many languages were spoken in Constantinople. A 16th century Chinese geographical treatise specifically recorded that there were translators living in the city, indicating this was a multilingual, multicultural cosmopolitan.
Women in literature
Constantinople was home to the first known Western Armenian literature, Armenian journal published and edited by a woman (Elpis Kesaratsian). Entering circulation in 1862, ''Kit'arr'' or ''Guitar'' stayed in print for only seven months. Female writers who openly expressed their desires were viewed as immodest, but this changed slowly as journals began to publish more "women's sections". In the 1880s, Matteos Mamurian invited Srpouhi Dussap to submit essays for ''Arevelian Mamal''. According to Zaruhi Galemkearian's autobiography, she was told to write about women's place in the family and home after she published two volumes of poetry in the 1890s. By 1900, several Armenian journals had started to include works by female contributors including the Constantinople-based ''Tsaghik''.
Markets
Even before Constantinople was founded, the markets of Byzantion were mentioned first by Xenophon and then by Theopompus who wrote that Byzantians "spent their time at the market and the harbour". In Justinian's age the ''Mese'' street running across the city from east to west was a daily market. Procopius claimed "more than 500 prostitutes" did business along the market street. Ibn Batutta who traveled to the city in 1325 wrote of the bazaars "Astanbul" in which the "majority of the artisans and salespeople in them are women".
Architecture and Coinage

The Byzantine Empire used Roman and Greek architectural models and styles to create its own unique type of architecture. The influence of Byzantine architecture and art can be seen in the copies taken from it throughout Europe. Particular examples include St Mark's Basilica in Venice, the basilicas of Ravenna, and many churches throughout the Slavic East. Also, alone in Europe until the 13th-century Italian Italian coin florin, florin, the Empire continued to produce sound gold coinage, the Solidus (coin), solidus of Diocletian becoming the bezant prized throughout the Middle Ages. Its Theodosian Walls, city walls were much imitated (for example, see Caernarfon Castle) and its urban infrastructure was moreover a marvel throughout the Middle Ages, keeping alive the art, skill and technical expertise of the Roman Empire. In the Ottoman period Islamic architecture and symbolism were used.
Great Bath House, bathhouses were built in Byzantine Empire, Byzantine centers such as Constantinople and Antioch.
Religion
Constantine's foundation gave prestige to the Bishop of Constantinople, who eventually came to be known as the Ecumenical Patriarch of Constantinople, Ecumenical Patriarch, and made it a prime center of Christianity alongside Rome. This contributed to cultural and theological differences between Eastern and Western Christianity eventually leading to the East-West Schism, Great Schism that divided Roman Catholic Church, Western Catholicism from Eastern Orthodoxy from 1054 onwards. Constantinople is also of great religious importance to Islam, as the conquest of Constantinople is one of the signs of the Islamic eschatology, End time in Islam.
Education
There were many institutions in ancient Constantinople such as the University of Constantinople, Imperial University of Constantinople, sometimes known as the University of the Palace Hall of Magnaura ( el, Πανδιδακτήριον τῆς Μαγναύρας), an Eastern Roman Empire, Eastern Roman educational institution that could trace its corporate origins to 425 AD, when the emperor
Theodosius II founded the Pandidacterium ( grc-x-byzant, Πανδιδακτήριον).
Media
In the past the Bulgarian newspapers in the late Ottoman period were ''Makedoniya'', ''Napredŭk'', and ''Pravo''.
[Strauss, Johann. "Twenty Years in the Ottoman capital: the memoirs of Dr. Hristo Tanev Stambolski of Kazanlik (1843–1932) from an Ottoman point of view." In: Herzog, Christoph and Richard Wittmann (editors). ''Istanbul – Kushta – Constantinople: Narratives of Identity in the Ottoman Capital, 1830–1930''. Routledge, 10 October 2018. , 9781351805223. p. 267.]
International status

The city acted as a defence for the eastern provinces of the old Roman Empire against the barbarian invasions of the 5th century. The 18-meter-tall walls built by
Theodosius II were, in essence, impregnable to the barbarians coming from south of the Danube river, who found easier targets to the west rather than the richer provinces to the east in Asia. From the 5th century, the city was also protected by the Anastasian Wall, a 60-kilometer chain of walls across the Thrace, Thracian peninsula. Many scholars argue that these sophisticated fortifications allowed the east to develop relatively unmolested while Ancient Rome and Western Roman Empire, the west collapsed.
Constantinople's fame was such that Sino-Roman relations, it was described even in contemporary Twenty-Four Histories, Chinese histories, the ''Old Book of Tang, Old'' and ''New Book of Tang'', which mentioned its massive walls and gates as well as a purported Water clock, clepsydra mounted with a golden statue of a man.
[Hirth (2000) [1885]]
East Asian History Sourcebook
. Retrieved 24 September 2016. The Chinese histories even related how the city Siege of Constantinople (674-678), had been besieged in the 7th century by Muawiyah I and how he exacted tribute in a peace settlement.
See also
People from Constantinople
*List of people from Constantinople
Secular buildings and monuments
*Augustaion
**Column of Justinian
*Basilica Cistern
*Column of Marcian
*Bucoleon Palace
*Horses of Saint Mark
*Obelisk of Theodosius
*Serpent Column
*Walled Obelisk
*Palace of Lausus
*Cistern of Philoxenos
*Palace of the Porphyrogenitus
*Prison of Anemas
*Valens Aqueduct
Churches, monasteries and mosques
*Atik Mustafa Pasha Mosque, Church of Saint Thekla of the Palace of Blachernae
*Bodrum Mosque, Church of Myrelaion
*Chora Church
*Little Hagia Sophia, Church of Saints Sergius and Bacchus
*
Church of the Holy Apostles
*Church of St. Polyeuctus
*Eski Imaret Mosque, Monastery of Christ Pantepoptes
*Fenari Isa Mosque, Lips Monastery
*Gül Mosque, Monastery of the Christ the Benefactor
*
Hagia Irene
*Hirami Ahmet Pasha Mosque, Saint John the Forerunner by-the-Dome
*Kalenderhane Mosque, Church of Theotokos Kyriotissa
*Koca Mustafa Pasha Mosque, Church of Saint Andrew in Krisei
*Nea Ekklesia
*Pammakaristos Church
*Stoudios Monastery
*Toklu Dede Mosque
*Vefa Kilise Mosque, Church of Saint Theodore
*Zeyrek Mosque, Monastery of the Pantokrator
*Unnamed Mosque established during Byzantine times for visiting Muslim dignitaries
Miscellaneous
*Ahmed Bican Yazıcıoğlu
*Byzantine calendar
*Byzantine silk
*Eparch of Constantinople (List of urban prefects of Constantinople, List of eparchs)
*Sieges of Constantinople
*Third Rome
*Thracia
*Timeline of Istanbul history
Notes
References
Bibliography
*Warwick Ball, Ball, Warwick (2016). ''Rome in the East: Transformation of an Empire'', 2nd edition. London & New York: Routledge. .
*
*
*
*Emerson, Charles. ''1913: In Search of the World Before the Great War'' (2013) compares Constantinople to 20 major world cities; pp 358–80.
*
*
*
*
*
*
online review
*
*
*
*Raymond Ibrahim, Ibrahim, Raymond (2018). ''Sword and Scimitar'', 1st edition. New York. .
*
*Klein, Konstantin M.: Wienand, Johannes (2022) (eds.): ''City of Caesar, City of God: Constantinople and Jerusalem in Late Antiquity.'' De Gruyter, Berlin 2022, ISBN 978-3-11-071720-4. doi
City of Caesar, City of God
*Korolija Fontana-Giusti, Gordana 'The Urban Language of Early Constantinople: The Changing Roles of the Arts and Architecture in the Formation of the New Capital and the New Consciousness' in ''Intercultural Transmission in the Medieval Mediterranean'', (2012), Stephanie L. Hathaway and David W. Kim (eds), London: Continuum, pp 164–202. .
*
*
*
*
*
*
*
*Henry Yule, Yule, Henry (1915). Henri Cordier (ed.)
''Cathay and the Way Thither: Being a Collection of Medieval Notices of China, Vol I: Preliminary Essay on the Intercourse Between China and the Western Nations Previous to the Discovery of the Cape Route'' London: Hakluyt Society. Accessed 21 September 2016.
External links
from ''History of the Later Roman Empire'', by J. B. Bury
History of Constantinoplefrom the "New Advent Catholic Encyclopedia".
Monuments of Byzantium– Pantokrator Monastery of Constantinople
Constantinoupolis on the webSelect internet resources on the history and culture
from the Foundation for the Advancement of Sephardic Studies and Culture
*, documenting the monuments of Byzantine Constantinople
Byzantium 1200 a project aimed at creating computer reconstructions of the Byzantine monuments located in Istanbul in 1200 AD.
Constantine and ConstantinopleHow and why Constantinople was founded
Hagia Sophia MosaicsThe Deesis and other Mosaics of Hagia Sophia in Constantinople
{{Authority control
Constantinople,
320s establishments in the Roman Empire
330 establishments
1453 disestablishments in the Ottoman Empire
15th-century disestablishments in the Byzantine Empire
Capitals of former nations
Constantine the Great
History of Istanbul, *
Holy cities
Populated places along the Silk Road
Populated places established in the 4th century
Populated places disestablished in the 15th century
Populated places of the Byzantine Empire
Roman towns and cities in Turkey
Thrace