The British Museum
The British Museum: Helmet From the Ship Burial at Sutton Hoo
An interactive series of pages on the many treasures found at Sutton Hoo, the burial site of an ancient Anglo-Saxon king.
Wikimedia
Wikipedia: Battle of Stamford Bridge
Generally considered the end of the Viking era, the Norwegians were trounced soundly in the Battle of Stamford Bridge, stopping the invasion of England. Unfortunately for the English, this was followed soon after by a Norman invasion.