Early Scandinavian Dublin
Early Scandinavian Dublin was a major Viking settlement and pivotal center of Hiberno-Norse power in Ireland from its establishment in the mid-9th century until the Anglo-Norman invasion in 1170. The First Viking Age in Ireland began in 795, when Vikings began carrying out hit-and-run raids on Gaelic Irish coastal settlements.
Source: Wikipedia — Early Scandinavian Dublin (CC BY-SA 4.0)