The history of Szczecin dates back to the 8th century, when a settlement of the West Slavic Pomeranian tribe appeared on Castle Hill by the banks of the Oder River. By the 9th century, the first defensive fortifications were erected here, and in the 10th century, a trade and craft centre began to actively form between the hill and the river. An important stage in the city's early history was the missionary work of Bishop Otto of Bamberg, who, in 1124, at the initiative of the Polish Duke Bolesław III Wrymouth, baptised the local inhabitants, marking one of the first written records of the settlement.
The establishment and development of the city were largely determined by several key factors. Its strategic position at the mouth of the Oder River, near its outflow into the Baltic Sea, naturally transformed Szczecin into a vital port and trade hub connecting maritime routes with continental territories. Thanks to this, the city quickly gained the status of one of the largest ports in the southern Baltic. In 1278, Szczecin joined the Hanseatic League — an influential commercial confederation of medieval cities — which significantly strengthened its economic power. Politically, the city also played a notable role, serving for centuries as the capital of the Duchy of Pomerania under the rule of the Griffin dynasty. In 1243, Duke Barnim I granted the city Magdeburg Rights, securing its self-governance and privileges.
In the Middle Ages, Szczecin's economy flourished through maritime trade, fishing, and craftsmanship. As a significant member of the Hanseatic League, the city conducted active trade in grain, timber, and other goods. During this period, iconic structures reflecting its wealth and status were erected, including the Castle of the Pomeranian Dukes and the Gothic Cathedral of St. James, founded as early as 1187. In subsequent centuries, the city fell under the influence of Denmark, Sweden, and Prussia, which left a noticeable mark on its culture and architecture. Thus, a strong culture of merchants and citizens was formed, and Szczecin established itself not only as an economic powerhouse but also as an important political and cultural centre of Pomerania.