The ceremonial county of Cornwall also includes the Isles of Scilly, which are administered separately.
The administrative centre of Cornwall, and its only city, is Truro.
From the early Middle Ages, language and culture were shared by Brythons trading across both sides of the Channel, resulting in the corresponding high medieval Breton kingdoms of Domnonée and Cornouaille and the Celtic Christianity common to both areas.
Historically Tin mining in Britain was important in the Cornish economy, becoming increasingly significant during the High Middle Ages and expanding greatly during the 19th century when rich copper mines were also in production.
Extensive stretches of Cornwall's coastline, and Bodmin Moor, are protected as an Area of Outstanding Natural Beauty. It is regarded as the county flag by Cornwall Council.
The area is noted for its wild moorland landscapes, its long and varied coastline, its attractive villages, its many place-names derived from the Cornish language, and its very mild climate.to the south by the English Channel, and to the east by the county of Devon, over the River Tamar which forms most of the border between them.Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain.In the mid-19th century, however, the tin and copper mines entered a period of decline.Subsequently, china clay extraction became more important and metal mining had virtually ended by the 1990s.