Kyzikos
A large ancient city at the junction of the Kapıdağ Peninsula and the mainland, shaped by its harbours and earthquake memory.
Balıkesir · Ancient city of three harbours
A threshold made by three harbours
Kyzikos lies within Erdek at the junction of the Kapıdağ Peninsula and the mainland. The Culture Portal notes that it was one of the rare settlements with three harbours. This position was more than a sea view: it organised movement between peninsula, mainland and different maritime routes.
Public life inside the walls
The city is described as encircled by strong walls, with the Temple of Hadrian, amphitheatre, necropolis, metroon, bouleuterion, theatre, acropolis and agora within its bounds. The list shows that Kyzikos cannot be read through a single monument: worship, council, burial, market and spectacle formed distinct spaces in one coastal city.
Coastal life changed by seismic shock
Despite a history reaching the mid-eighth century BCE, Kyzikos experienced abandonment and population loss over time because it stands in an earthquake zone. The official record's account of a mid-sixth-century CE earthquake after which much of the population migrated requires us to read the archaeological landscape through settlement history altered by natural events as well as trade.
Excavation ground and finds in Bandırma
The Culture Portal reports ongoing excavation to reveal identified structures and bring the city into cultural tourism, while coins and other finds from scientific work are exhibited at Bandırma Museum. The page will add new announcements with date and institutional source, keeping the research trail on the ground and in the museum together.
Between the Marmara and Northern Aegean
Kyzikos shows that the Northern Aegean narrative does not stop at a coastline but continues through a cultural geography connecting Kapıdağ, Mysia, Troas and Mount Ida. In the inventory, harbour, wall, temple, necropolis and museum find will connect as records that explain one another.
Four sourced layers from the research library
How is the place situated?
Kyzikos lies within Erdek where Kapıdağ joins the mainland. Its three harbours are named alongside walls, agora, theatre, bouleuterion, metroon, necropolis, amphitheatre and the Temple of Hadrian; this range requires the city to be read beyond a single monument.
How do the layers change?
The official record begins the city's historical periods in the mid-8th century BCE. Earthquakes transformed a settlement that gained strategic and commercial importance; after the mid-6th-century CE shock, much of the population migrated and the city lost its former standing.
How was the place inhabited?
Harbours represent movement and exchange; agora and bouleuterion public decision-making; theatre and amphitheatre collective spectacle; and the necropolis a separate funerary world. Coins and other finds at Bandırma Museum preserve portable records of this extensive urban landscape.
What can be said today?
An official report dated 24 November 2025 states that excavation continues around the Temple of Hadrian, amphitheatre and necropolis. This currency is not a visiting guarantee; tickets, hours, open areas and field safety must be verified through dated institutional notices.
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Frequently asked questions
Where is Kyzikos?
Kyzikos is presented in this guide as a ancient city of three harbours in Balıkesir.
How can I find sources for Kyzikos?
The Sources section on this page links to the institutions and research records supporting this dossier.