Historical place profile
Nicomedia
Nicomedia was founded in 712/11 BC as a Megarian colony named Astacus and was rebuilt by Nicomedes I of Bithynia in 264 BC. The city was an important administrative center of the Roman Empire.
Record details
- Research ID
- catholon:place:pleiades:511337
- Catalogue ID
- pleiades:511337
- Place type
- settlement
- Coordinates
- 40.765191, 29.919887
- Precision
- precise
- Locator semantics
- representative_point_not_boundary
Historical description
Nicomedia was founded in 712/11 BC as a Megarian colony named Astacus and was rebuilt by Nicomedes I of Bithynia in 264 BC. The city was an important administrative center of the Roman Empire.
Geographic evidence
The coordinates are a representative_point_not_boundary. They identify a research anchor and do not by themselves assert an ancient administrative boundary or the full extent of the settlement.
Provenance: Barrington Atlas: BAtlas 52 F3 Nicomedia
Source and reuse
This profile derives from the Pleiades current GIS record, licensed CC BY 3.0. Pleiades place record The profile preserves the source name, point, type, description, precision and provenance without silently adding a boundary reconstruction.
Research path
Compare this place with the chronological map at the relevant year, nearby political units, routes, institutions and the period portals. Where the source record is silent about jurisdiction, population or ecclesiastical rank, this profile makes no such claim.
Phase II — chronological and spatial research layer
Historical problem
Nicomedia was founded in 712/11 BC as a Megarian colony named Astacus and was rebuilt by Nicomedes I of Bithynia in 264 BC. The city was an important administrative center of the Roman Empire.
Spatial reading
The record classifies this location as settlement with precise point precision. The coordinate is a research anchor, not a timeless urban, political or ecclesiastical boundary.
Source path
Geographic provenance: Barrington Atlas: BAtlas 52 F3 Nicomedia. The place should be compared with the active time slice, routes, neighbouring polities, institutions and dated textual witnesses.
Questions for further dossier work
- Which occupation phases are directly attested at this coordinate?
- Which ancient or medieval names refer to the same site, and which remain disputed?
- Which political and ecclesiastical jurisdictions changed over time?
- Which routes, ports or regional centres explain the place’s historical importance?