Welsh fortress-palace transformed into regal residenceThe unmistakable silhouette of Raglan crowning a ridge amid glorious countryside is the grandest castle ever built by Welshmen.We can thank Sir William ap Thomas, the ‘blue knight of Gwent’, for the moated Great Tower of 1435 that still dominates this mighty fortress-palace. His son Sir William Herbert, Earl of Pembroke, created the gatehouse with its flared ‘machicolations’.