Nicomedia

Nicomedia (Greek: Νικομήδεια, modern İzmit) was founded by Nicomedes I of Bithynia at the head of the Gulf of Astacus which opens to the Propontis. In earlier antiquity, the city was called Astacus or Olbia (founded 712 BC). After being destroyed, it was rebuilt by Nicomedes I in 264 BC under the name of Nicomedia, and has ever since been one of the most important cities in northwestern Asia Minor. Hannibal came to Nicomedia in his final years and committed suicide in nearby Libyssa (Gebze). The historian Arrian was born there. Nicomedia was the metropolis of Bithynia under the Roman Empire, and Diocletian made it the eastern capital city of the Roman Empire in 286 when he introduced the Tetrarchy system. Nicomedia remained as the eastern (and most senior) capital of the Roman Empire until Licinius was defeated by Constantine the Great in 324. Constantine mainly resided in Nicomedia as his interim capital city for the next six years, until in 330 he declared the nearby Byzantium as Nova Roma, which eventually became known as Constantinople (present-day Istanbul). Constantine died in a royal villa at the vicinity of Nicomedia in 337. Owing to its position at the convergence of the Asiatic roads leading to the new capital, Nicomedia retained its importance even after the foundation of Constantinople.

See C. Texier, Asie mineure (Paris, 1839); V. Cuenet, Turquie d'Asie (Paris, 1894).

See also

• Nicaea (present-day İznik, another important city in Bithynia, and the interim Byzantine capital city between 1204 and 1261 (Empire of Nicaea) following the Fourth Crusade in 1204, until the recapture of Constantinople by the Byzantines in 1261. Earlier, the site of the Nicene Creed as well as the First Council of Nicaea and Second Council of Nicaea.)

Coordinates: 40°46′N, 29°55′Ede:Nikomedia es:Nicomedia fr:Nicomédie it:Nicomedia la:Nicomedia hu:Nicomedia pl:Nikomedia sv:Nikomedia tr:Nicomedia

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