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c. 1026

Before Turku — a river valley at the edge of the Viking world

There is no town here yet. But the Aura river valley is full of farms, hillforts and people handling silver from Central Asia, England and Germany.

Late Iron Age · Viking Age
The big story

A valley of farms, forts and far-away trade

In 1026 there is no “Turku”. No town, no church, no castle. But the land along the Aura river is one of the busiest corners of the North.

Life along the river

  • Farms in small villages. Families keep cattle, sheep and pigs, grow barley and rye in strip fields, fish in the river and hunt in the forests. Squirrel, marten and beaver furs are valuable trade goods.
  • Iron and craft. Smiths turn bog iron into tools and weapons. Women weave woollen cloth and decorate clothes with bronze spirals — the same pattern you see along the top of this page.
  • The dead stay close. Each village has its cemetery nearby. Rich graves contain swords, spearheads, bronze jewellery and silver Well documented.
  • No king, no state. Power belongs to wealthy families and local chieftains. Nobody here pays taxes to Sweden or Novgorod — yet.

Forts on the hills

About 10 km east of today’s city centre, at Vanhalinna in Lieto, a steep rock hill rises where the river meets the old route inland to Häme. People had fortified it already in the Bronze Age. From about 1000 it is fortified again, with walls of earth, stone and timber Well documented.

  • It works as a refuge in dangerous times and probably as a centre of power for the valley.
  • Archaeologists have found the remains of 11 buildings, spearheads, arrowheads and German silver coins.
  • It stays in use until the 1300s, when Turku Castle takes over its job.

Connected to the wider world

The Aura valley sits on the sea routes between Sweden, Gotland, Estonia and the Russian rivers. Furs go out; silver, swords, glass beads, salt and new ideas come in. One of those ideas is Christianity: in the 1000s more people here are buried unburnt, lying east–west, and some wear small crosses Well documented.

Even the city’s name tells this story. Turku comes from the Old East Slavic word tŭrgŭ, “marketplace”, possibly via Estonian. In old sources the town is Suomen Turku, “the marketplace of Finland” — and Suomi here meant this southwestern corner. The Swedish name Åbo most likely means “dwelling by the river” Likely.

How do we know?

Almost nothing was written down here in 1026. Nearly everything comes from archaeology: graves, hillforts, house remains and buried silver. That means dates are often approximate, and new digs can change the picture — as Vanhalinna and the 2026 Sysmä silver hoard show.

The Aura river valley, c. 1026Drag the slider, then tap the symbols on the map.Aura riverArchipelago SeaWest: Åland, Sweden, GotlandEast: Gulf of Finland, NovgorodInland: Häme, fursVanhalinnaKoroinenThe Aura river valley, c. 1026NHillfortFarms & cemeteriesLater sites
Sea level compared with today: ≈ +4.0 m

Tap a symbol to read about it.

Drag the slider: the land has risen several metres since 1026, pushing the shore out to sea.Schematic illustration — not to scale. Shorelines are estimates.
Why it matters

Around 250 years later a town was founded right here. It was no accident: the people, wealth and trade routes of this valley were already in place. And because the land keeps rising — today roughly 40 cm per century — harbours silt up and shores move. Turku’s port has followed the water downriver ever since.

On the lighter side

Pocket money from Samarkand and London

Imagine paying for a new sword with a handful of chopped-up coins from three different empires. In the Aura valley around 1026, that was perfectly normal.

  • Coins from far away. Silver found in Finnish soil includes Islamic dirhams from Central Asia, English pennies and German pennies. From the 1000s alone, more than 4,000 German and 1,000 English coins are known Well documented.
  • Silver was weighed, not counted. People carried small folding scales. A coin was worth what its silver weighed.
  • Cut to size. Need a smaller amount? Chop the coin. These pieces are called hacksilver.
  • Is it real? Many coins have small nicks where someone tested that the silver went all the way through.
  • Made at home. A few dozen coins found in Finland are local imitations of English and Byzantine coins.
  • Buried treasure. People hid silver in the ground as hoards — for safekeeping, or perhaps as offerings. Why they never came back for some of them, we usually don’t know.
Fresh from 2026

For 130 years the record holder was a hoard of over 1,700 coins found in Nousiainen, just north of Turku, in 1895. In September 2026 a metal detectorist in Sysmä found an even bigger one: about 4.5 kg of coins, hacksilver and jewellery from around 1000–1050 Well documented.

Fun fact

Some coins were turned into pendants. A penny with an English king’s name could end its days as jewellery on a necklace in Southwest Finland Likely.

A silver hoard

Pick a coin from the hoard ↑

Volga900s991–1012990s →Aura valleyGotlandSigtunaHedebyLondonHarzNovgorodBulgharfrom Samarkand(about 4,000 km)
Pick a coin from the hoard to follow its journey to the Aura valley.Schematic map. Coin drawings are simplified.

Sources and further reading

  1. Haggrén, G., Halinen, P., Lavento, M., Raninen, S. & Wessman, A. (2015). Muinaisuutemme jäljet. Suomen esi- ja varhaishistoria kivikaudelta keskiajalle. Gaudeamus.
  2. Talvio, T. (2002). Coins and Coin Finds in Finland AD 800–1200. Iskos 12, Finnish Antiquarian Society.
  3. Luoto, J. (1984). Liedon Vanhalinnan mäkilinna. Suomen Muinaismuistoyhdistyksen Aikakauskirja 87.
  4. Vanhalinna hillfort — overview with references.
  5. Finnish Heritage Agency — register of ancient monuments.
  6. Climateguide.fi — Land uplift on the Finnish coast.
  7. Turku Castle — history.
  8. Live Science (2026) — Finland’s largest Viking Age silver hoard found in Sysmä.

Spotted a mistake? Know more?

This site is open and free. Corrections and additions are welcome — every page lists its sources so you can check them.