Constantinopolis

Constantinople

Κωνσταντινούπολις or Κωνσταντινούπολη (in Greek) Constantinopolis (in Latin)
Map of Constantinople
Shown within Turkey
Alternate name	Byzantion, Miklagard/Miklagarth, Tsargrad, Basileuousa (Queen of Cities), Megalopolis (the Great City)
Location	Istanbul, Istanbul Province, Turkey
Region	Thrace
Coordinates	41°00′49″N 28°57′18″E / 41.01361°N 28.95500°E / 41.01361; 28.95500Coordinates: 41°00′49″N 28°57′18″E / 41.01361°N 28.95500°E / 41.01361; 28.95500
Type	Imperial city
Area	6 km2 (2.3 sq mi) enclosed within Constantinian Walls 14 km2 (5.4 sq mi) enclosed within Theodosian Walls
History
Builder	Constantine the Great
Founded	AD 330
Periods	Late Antiquity to Late Middle Ages
Cultures	Roman, Byzantine

Κωνσταντινούπολις or Κωνσταντινούπολη (in Greek)

6 km² (2.3 sq mi) enclosed within Constantinian Walls

Capital of the Byzantine Empire 330-1204 AD; 1261-1453 AD

Constantinople (Greek: Κωνσταντινούπολις Konstantinoúpolis or Κωνσταντινούπολη Konstantinoúpoli; Latin: Constantinopolis; Ottoman Turkish: قسطنطینية, Ḳosṭanṭīnīye‎) was the capital city of the Roman/Byzantine (330–1204 and 1261–1453), and also of the brief Latin (1204–1261), and the later Ottoman (1453–1923) empires. It was reinaugurated in 324 AD from ancient Byzantium as the new capital of the Roman Empire by Emperor Constantine the Great, after whom it was named, and dedicated on 11 May 330 AD.

From the mid-5th century to the early 13th century, Constantinople was the largest and wealthiest city in Europe and it was instrumental in the advancement of Christianity during Roman and Byzantine times as the home of the Ecumenical Patriarch of Constantinople and as the guardian of Christendom's holiest relics such as the Crown of Thorns and the True Cross. After the final loss of its provinces in the early 15th century, the Byzantine Empire was reduced to just Constantinople and its environs, along with Morea in Greece, and the city eventually fell to the Ottomans after a month-long siege in 1453.

Constantinople was famed for its massive and complex defences. Although besieged on numerous occasions by various peoples, the defences of Constantinople proved invulnerable for nearly nine hundred years before the city was taken in 1204 by the Crusader armies of the Fourth Crusade, and after it was liberated in 1261 by the Byzantine Emperor Michael VIII Palaiologos, a second and final time in 1453 when it was conquered by the Ottoman Sultan Mehmed II. The first wall of the city was erected by Constantine I, and surrounded the city on both land and sea fronts. Later, in the 5th century, the Praetorian Prefect Anthemius under the child emperor Theodosius II undertook the construction of the Theodosian Walls, which consisted of a double wall lying about 2 km (1.2 miles) to the west of the first wall and a moat with palisades in front. This formidable complex of defences was one of the most sophisticated of Antiquity and the city was built intentionally on seven hills as well as juxtaposed between the Golden Horn and the Sea of Marmara and thus presented an impregnable fortress enclosing magnificent palaces, domes, and towers, necessitated from being the gateway between two continents (Europe and Asia) and two seas (the Mediterranean and the Black Seas).