The stone circle at Castlerigg is situated near Keswick in Cumbria, North West England. One of around 1,300 stone circles in the British Isles and Brittany, it was constructed as a part of a megalithic tradition that lasted from 3,300 to 900 BC, during the Late Neolithic and Early Bronze Ages.

Various archaeologists have commented positively on the beauty and romance of the Castlerigg ring and its natural environment. In his study of the stone circles of Cumbria, archaeologist John Waterhouse commented that the site was "one of the most visually impressive prehistoric monuments in Britain."

Every year, thousands of tourists travel to the site, making it the most visited stone circle in Cumbria. This plateau forms the raised centre of a natural amphitheatre created by the surrounding fells and from within the circle it is possible to see some of the highest peaks in Cumbria: Helvellyn, Skiddaw, Grasmoor and Blencathra.