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Prusias ad Mare/Kios was an ancient Greek city on the Propontis. The city joined the Aetolian League and was destroyed by Philip V of Macedon. Prusias I of Bithynia rebuilt the site, naming it for himself.

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Canonical URI for this page:
https://pleiades.stoa.org/places/511385

Representative Point (Latitude, Longitude):
40.432469, 29.15639

Locations:

Representative Locations:
- DARMC location 24129 (750 BC - AD 640) accuracy: +/- 10 meters.

Names:

Geographic Names:
- Cio (Latin, AD 300 - AD 640)
- Κίος (Kios: Ancient Greek, 750 BC - AD 640)
- Prusias ad Mare (550 BC - AD 300)

Prusias ad Mare/Kios makes connections with:

Prusias ad Mare/Kios member of Aetolian League (300 BC - 201 BC)
Prusias ad Mare/Kios member of Delian League (500 BC - 401 BC)
Prusias ad Mare/Kios connection Propontis (unspecified date range)

Prusias ad Mare/Kios receives connections from:

None

Place type:
settlement, port

References:

Evidence:

See Further:

Related:

Initial Provenance:
Barrington Atlas: BAtlas 52 E4 Prusias ad Mare/Kios

Details:

The Barrington Atlas Directory notes: Gemlik

Alternate representations:
Atom, JSON, KML, RDF+XML, Turtle

Suggested citation:
C. Foss, Brady Kiesling, R. Talbert, Sean Gillies, Jeffrey Becker, Tom Elliott, DARMC, R. Scott Smith, and Greta Hawes, 'Prusias ad Mare/Kios: a Pleiades place resource', Pleiades: A Gazetteer of Past Places, 2025 <https://pleiades.stoa.org/places/511385> [accessed: 12 February 2026]

Cite this resource in Wikipedia:

            {{cite web |url=https://pleiades.stoa.org/places/511385 |title=Places: 511385 (Prusias ad Mare/Kios) |author=Foss, C. |accessdate=February 12, 2026 10:23 am |publisher=Pleiades}}