Reginald's Tower

Circular tower in the county town of Waterford, Republic of Ireland. Traditionally built in 1003, it is named after the Viking chief Ragnvald. It seems unlikely that the tower was constructed at such an early date, although the core of the structure may have existed before the Norman occupation of the town in 1170. Amongst its famous visitors were King Henry II and King Richard II. Reginald's Tower has been used as a mint (15th century), a munitions store, and a prison (19th century); it now accommodates the city museum.