Filyos Tios Ancient City: Where the Black Sea Meets a Forgotten Port

The sea is still here. The ships that made this town prosperous are gone.

At Filyos, on Turkey’s western Black Sea coast, waves move towards a shoreline once connected to an ancient trading city. Beyond the water lie the remains of Tios, where a harbour, a theatre and places of worship belonged to the same everyday world. Fish, wine and grain passed through its trading network; the river and sea connected the settlement to places beyond it.

On a windy day, the coast makes itself felt before you have read a single information board. Air presses against your jacket. Breaking water interrupts the quieter sounds around you. After rain, the smell of damp earth mingles with the sea breeze.

Then you notice the stonework.

A wall survives only to a certain height. A building has lost the rooms that once made its purpose obvious. There is enough to catch your attention, but understanding what stood here takes a little patience.

That is the pleasure of Filyos Tios: watching a ruined place gradually become a town in your mind.

A City Built Around Connections

Tios Archaeological Site lies in Filyos, within Zonguldak’s Çaycuma district. Its Greek colonial settlement dates to the seventh century BC, when people from Miletus established a community on this coast.

The choice of location mattered. The ancient Billaios River, today’s Filyos River, gave the coastal settlement a connection with the interior. Tios also occupied the meeting ground between the ancient regions of Bithynia and Paphlagonia.

Think of the coastline as a route rather than a boundary. For a trading town, the water outside the harbour was the beginning of a journey. Goods could arrive, change hands and continue elsewhere.

That helps explain why the ruins include more than defensive walls. A port needed the buildings of ordinary urban life, too.

The Buildings Behind the Harbour

The archaeological remains recorded at Tios include a Roman theatre, bath buildings, an ancient harbour and breakwaters, along with religious structures on the acropolis. Excavations began in 2006, and the site preserves evidence from several periods rather than one moment in history.

A theatre makes a useful starting point for imagining that urban life. Its shape has a recognisable purpose: people gathering, facing a performance, sharing an afternoon or evening.

Bath buildings suggest another rhythm—washing, conversation and the routines that continued between larger historical events. These structures help give the settlement a population again. The people who lived here had more to do than trade cargo or endure changes of ruler.

What you can approach will depend on the visitor route and archaeological work. Treat the published list of discoveries as a picture of the wider ancient city; it does not mean every structure is accessible during every visit.

Centuries Written Over One Another

Tios later came under Roman rule and became a bishopric during the Byzantine period. Its remains include a medieval church and a burial chapel, alongside structures from earlier centuries.

A single label—“ancient city”—can hide that long life.

The people who used the church did not inhabit exactly the same town as those who attended the Roman theatre. Buildings changed, institutions changed, and older structures became part of the surroundings of later generations.

You can see why archaeologists work slowly. A stone’s position, the layer beneath a floor or the relationship between two walls may help distinguish one chapter from another.

For the visitor, the same care makes the place more interesting. Instead of expecting every fragment to announce its meaning immediately, let the information boards explain what the surviving material can establish.

Walking With the Sea Beside You

Filyos works well as a visit that leaves room for the coast.

Allow about an hour to an hour and a half for the archaeological site as a planning estimate, depending on the areas open and how closely you read the displays. Give yourself additional time for a waterfront walk or a meal in town.

Shoes with a good grip are useful around uneven ground. After rain, watch your footing; in warm weather, carry drinking water and sun protection. A light windproof layer can make a considerable difference beside the Black Sea.

For photographs, look for a permitted viewpoint where surviving stonework and the coastline fit into the same frame. That relationship explains the place more clearly than an isolated close-up of a wall. In softer morning or afternoon light, the texture of the masonry may also be easier to capture.

Keep to marked routes and leave excavated walls clear. Visitors with limited mobility should ask about the current accessible route before travelling.

Something Warm After the Ruins

After walking, a seat in town gives the visit a different pace.

If you choose fish, ask what is available that day and confirm the price before ordering, especially when it is sold by weight. Fresh bread, a squeeze of lemon and a simple meal are enough; there is no need to invent an “ancient Tios recipe” to make lunch belong to the visit.

Or settle for tea.

The glass warms your fingers. The first sip brings that familiar slight bitterness. Outside, the wind continues to move through the town while you sit still for a while.

It is a small, ordinary ending to a place whose most compelling history is also ordinary: people living by the water, working, eating and making a town around their needs.

Opening Hours and Getting There

The Turkish Museums listing currently gives opening hours of 08:30–17:15, with closure on Mondays, and lists admission as free, including for foreign visitors. An older ministry brochure gives different seasonal hours, so confirm the schedule before making a dedicated journey. The contact number on the museum listing is +90 372 323 45 57.

Filyos can be reached by road and rail. If travelling by train, check the timetable for your return journey as well as your arrival.

Leave enough daylight for the site itself. The waterfront can follow afterwards, when there is less reason to watch the clock.

The ships are gone, but the coast still helps explain why Tios was here.

Filyos Tios Visitor Summary

Detail	Practical information
Place	Filyos Tios Archaeological Site
Location	Filyos, Çaycuma district, Zonguldak
Historical character	Ancient Black Sea port with Greek, Roman and Byzantine history
Recorded remains	Theatre, baths, harbour remains and religious structures
Suggested time	60–90 minutes, plus time in Filyos
Listed opening hours	08:30–17:15; confirm before travelling
Closed	Mondays
Listed admission	Free, including for foreign visitors
Getting there	Road or rail to Filyos
Useful to bring	Shoes with good grip, water and a windproof layer
Access	Ask about the current route if steps or uneven ground are a concern

Historical and transport details follow the Culture Portal; admission and current listed hours follow Turkish Museums.