Tamworth Castle, a Grade I listed building, is a Norman castle overlooking the mouth of the River Anker into the Tame in the town of Tamworth in Staffordshire, England. Before boundary changes in 1889, however, the castle was within the edge of Warwickshire while most of the town belonged to Staffordshire.The site served as a residence of the Mercian kings in Anglo Saxon times, but fell into disuse during the Viking invasions. Refortified by the Normans and later enlarged, the building is today one of the best preserved motte-and-bailey castles in England. Source: Wikipedia (en)