Flint Castle (Welsh: Castell y Fflint) in Flint, Flintshire, was the first of a series of castles built during King Edward I’s campaign to conquer Wales.
The site was chosen for its strategic position in North East Wales. The castle was only one day’s march from Chester, supplies could be brought along the River Dee and there was a ford nearby across to England that could be used at low tide.
The castle is based on Savoyard models where one of the corner towers is enlarged and isolated.[5] This independent structure served as both corner tower and keep or donjon, like at Dourdan, France. Flint’s keep has been compared to the donjon at Aigues-Mortes, France. Edward I may have been familiar with Aigues-Mortes having passed through the fortress on the way to join the Eighth Crusade in 1270
