The Lake District, also known as the Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous for its lakes, forests and mountains (or fells) and its associations with the early 19th century writings of William Wordsworth and the other Lake Poets, Beatrix Potter and John Ruskin. A National Park was established in 1951 and, following a minor extension in 2016, now covers an area of approximately 2,362 square kilometres. It was designated as a UNESCO World Heritage Site in 2017. It is located entirely within the county of Cumbria, and all the land in England higher than 3,000 feet above sea level lies within the National Park, including Scafell Pike, the highest mountain in England. It also contains the deepest and longest bodies of water in England, respectively Wast Water and Windermere.