England's first national park was created in 1951. Since then the list has grown to 10 areas which are protected because of their countryside, wildlife and cultural heritage.
Nearly 70 years on, Environment Secretary Michael Gove has announced he is launching a review to consider whether to expand England's network of parks as well as areas of outstanding natural beauty.
So where are the country's 10 current national parks?
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Seven Sisters cliffs are part of South Downs National Park, established in 2010
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The sun lights up a valley near Pickering in the North York Moors, which became a national park in 1952
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The sun rises behind Thurne Mill on Britain's largest protected wetland, the Norfolk Broads
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A view from Higger Tor as snow covers the tops of the hills in the Peak District, which was made England's first national park in 1951
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Swimmers take part in a 5km swim in Windermere in the Lake District, England's largest national park
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A soldier from 6 Rifles prepares to fire on the range at Okehampton Camp, Dartmoor, in Devon
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The New Forest was the first new national park for 50 years when it was given the status in 2005
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Northumberland National Park, established in 1956, contains parts of Hadrian's Wall
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Exmoor ponies are a common sight on the moors of Exmoor National Park
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The Dalesman steam train crosses the 24-arch Ribblehead Viaduct, erected in 1875, in the Yorkshire Dales National Park
England also has 34 areas of outstanding natural beauty - including the Chilterns, the Cotswolds and the Isle of Wight.