The document provides information about Cornwall, a county in southwest England. It notes that Cornwall has a population of over 526,300 people and is known for its Celtic Cornish language. Some of Cornwall's popular landmarks and celebrations mentioned include Tintagel Castle, Dozmary Lagoon, saffron cake, Chapel Porth beach, Bude, and Poundstock. The county's legends include giants, piskies, and King Arthur.