Flint Castle, was the first to be built by Edward the First after his conquest of Wales, with construction work beginning in 1277. Primarily made of millstone grit and sandstone, the castle has an inner ward and an outer bailey, separated by a tidal moat which is bridged by a gatehouse and drawbridge.
The inner ward of the castle has 3 large corner towers. The fourth tower was turned into an even larger isolated keep, itself sealed by a drawbridge which could have been raised to prevent entry if the rest of the castle was taken. This sort of design was copied from mediaeval French castles, and was unique in Britain.
Other famous historical evens at the castle include the capture of Richard the Second by Henry Bolingbroke, (soon to be Henry the Fourth) in 1399.