The monastery raided by Vikings in 793 was Lindisfarne, an island monastery off the northeast coast of England.
The attack is recorded in the Anglo-Saxon Chronicle and in a letter written by Alcuin, a Northumbrian scholar at Charlemagne’s court. Raiders seized treasure and disrupted the religious community, making the event famous across Christian Europe. Lindisfarne was an important centre of learning and the home of the Lindisfarne Gospels.
Historians often use the raid as a convenient starting point for the Viking Age, although Scandinavian activity overseas began before 793 and continued after the traditional end date. Lindisfarne is also called Holy Island, but the historic monastery and the island are not exactly the same thing. The raid did not destroy the island permanently; its religious community continued for centuries, though it later moved inland to Durham.