hill with views of Skiddaw, Blencathra, High Rigg and Clough Head. The 98ft (30m) diameter circle comprises 38 stones; within that is a rectangle of 10 more. Its purpose is unknown: it was possibly a trading post, a meeting place or even an astronomical observatory – the stones are aligned to the sun, moon and stars. Castlerigg is about a mile east of Keswick; make a loop walk from the town’s market square.
Free; open year-round (0370 333 1181; english-heritage.org. uk/visit/places/castlerigg-stonecircle/) Set on the slopes of a shallow valley, gazing out towards the sea, the well-preserved remains of this near-2,000-year-old Cornish settlement offer an insight into daily life in the Iron Age. You can walk along the main street and around the cluster of stone-walled courtyard houses, and peek into the fogou, an underground passage that might have been used for storage, shelter or rituals. There are lovely walks in the surrounding countryside, and more fogous to be found at the nearby sites of Carn Euny Ancient Village and Halliggye.