In 914 AD, Aethelflaed constructed an imposing mile-long wall around Warwick, leaving an enduring mark in history. This fortified the town and left an indelible legacy. Also called the Mound, it is a piece of the castle's original wooden structure built in 1068. Climbing to its summit, you'll feel like you're on top of the world, surveying the River Avon, Warwick town, and its surroundings.