Cornwall is a duchy in the south west of the United Kingdom. Lying west of Devon from which it is separated by the River Tamar, Cornwall is one of the more isolated and distinctive parts of the United Kingdom but is also one of its most popular with holidaymakers. Its relatively warm climate, long coastline, amazing scenery, and diverse Celtic heritage (combined with tales of smuggling, pirates and King Arthur!) go only part of the way to explaining its appeal.

Cornwall is a popular destination for those interested in cultural tourism, due to its long association with visual and written arts and its wealth of archaeology. Its mining heritage has been recognised by the United Nations (UNESCO). Over thirty percent of the county is designated as an Area of Outstanding Natural Beauty (AONB), giving it national status and protection. Cornwall has always been fiercely proud of its Celtic heritage, and for many residents their Cornish identity supersedes their Englishness or Britishness.

Cornwall is a duchy. Prince Charles is the current Duke of Cornwall, and his wife Camilla is the Duchess. The modern English name of the duchy is thought come from its old Celtic name, Kernou, meaning "the Horn", referring to its shape. The Celtic name was latinised to Cornovia or Cornubia.

- Wikivoyage