The Battle of Stamford Bridge took place on September 25, 1066, near York, England. It was a significant conflict between the forces of King Harold Godwinson and the invading army led by Harald Hardrada, the King of Norway. The battle marked the end of Viking attempts to conquer England and showcased the strength of the English army. King Harold's forces achieved a decisive victory, killing Hardrada and many of his men. This battle was crucial as it occurred just weeks before the Norman Conquest, when William the Conqueror invaded England, leading to further changes in English history.