place
Nicomedia
Also known as İzmit
high
40.7625, 29.9175 · Wikidata Q209349 P625 (accessed 2026-11-12) · On the map
This name is already in the atlas. The older page is /places/nicomedia. The sources below were added with the live expansion.
- founded or start. -264high · Wikidata P571
Diocletian's eastern capital where the Great Persecution began in 303.
Wikipedia extract
Nicomedia was an ancient Greek city located in what is now Turkey. In 286 AD, Nicomedia became the eastern and most senior capital city of the Roman Empire, a status which the city maintained during the Tetrarchy system.
CC BY-SA 4.0, Wikipedia contributors. Source page
Sources
- Nicomedia · Wikipedia contributorsAccessed 2026-11-12 · CC BY-SA 4.0
- Wikidata Q209349 · Wikidata contributorsAccessed 2026-11-12 · CC0 1.0
- Pleiades place 511337 · Pleiades contributorsAccessed 2026-11-12 · CC BY 3.0
Authority files
- Q209349
- Pleiades 511337
- VIAF 152449471
- Library of Congress n81009727
- Trismegistos 1464
Related
- Diocletian · person
- Diocletianic Persecution · event
- Lucian of Antioch · person
emperors · persecution