The legendary item sought after in Arthurian legends is the Holy Grail. It is often described as the cup used by Jesus during the Last Supper, symbolizing divine grace and eternal life. Questing for the Holy Grail represents the pursuit of spiritual fulfillment and moral integrity, especially in the stories of King Arthur and his knights. The quest signifies a journey toward self-discovery, enlightenment, and the ideals of chivalry.