Flint Castle is an impressive Edwardian two-bailey stone enclosure castle. Commanding the site at one corner of the rectangular inner bailey, detached by its own ditch is an unique cylindrical great tower. The other three corners having substantial round flanking towers projecting into the Dee estuary. The large walled outer bailey is unflanked with a large ditch in front and a cross-ditch at the back guarding the small inner gatehouse, all fed by water from the Dee. A mile south is Bryn-y-Cwn Castle and 6 miles south-east is Ewloe Castle.