Flint Castle, located in Flint, Flintshire, was the first of a series of castles built during King Edward I's campaign to conquer Wales.
Situated over a harbour on the River Dee estuary, construction began in 1277 and continued for nine years. The work was never completed and as a result the structure is not as tall as other castles of its time, such as Denbigh and Rhuddlan.
In 1399 Richard II of England was captured and held there before being returned to London. The castle was occupied many times during the English Civil War and it has also been used as a quarry.
In 1838 J. M. W. Turner painted a watercolour of the castle (see above).
HMS Flint Castle (K383) was a Royal Navy Castle class corvette launched in 1943, named after Flint Castle.