Tamar Valley National Landscape is a legally designated Area of Outstanding Natural Beauty in Devon and Cornwall in England.^[1]

There has been mining in the area for hundreds of years, in 1844 a copper seam was discovered that was so big it led to a 50-year mining boom and the creation of Europe's biggest mine, Devon Great Consols. The copper ran low during the 1890s leading to mass unemployment and the emigration of surplus workers.^[2]

The valley is incorporated inside the Cornwall and West Devon Mining Landscape which is a World Heritage Site. The site was added to the World Heritage List during the 30th session of the UNESCO World Heritage Committee in Vilnius, July 2006.

The AONB straddles the administrative border between Cornwall and Devon and covers around 75 square miles of the lower River Tamar below Launceston. There are four ancient towns: Launceston in the North with a steam railway and Norman castle; Tavistock to the East and adjacent to Dartmoor; Callington in the West with a mural trail, and Saltash with the Royal Albert Bridge.^[3]

There are numerous landmarks and listed buildings including Devon Great Consols, the Tamar Valley Line and the National Trust's Cotehele and Buckland Abbey.