I walked up to Carn Brea a couple of months ago on a fine, blustery day with hardly a cloud in the sky. Carn Brea overlooks the twin west Cornwall towns of Redruth and Camborne but on a clear day as is today, the views extend west to St Ives and on a very clear day, south towards Mounts Bay. You can drive up here on a initially paved, and then latterly rough track and there's plenty of room to park and turn around. The track I took comes off the B3297 road which links Redruth to the village of Four Lanes and is well signposted
There are two objects of interest up here, namely the enormous obelisk and the remains of the old castle. The 90 feet tall Celtic Cross was erected by public subscription in 1836 to commemorate Francis Basset, a local man who was a wealthy mine owner and builder who constructed huge earthworks around Plymouth in 1779 to defend the port from potential raids by French and Spanish ships.
The castle was built in 1379 , but then became a chapel dedicated to St Michael. It was rebuilt in the 18th century by the aforementioned Basset family who used it as a hunting lodge until it fell into disrepair. It was renovated in the 1980s and has been a restaurant ever since. The western side of the castle rests upon massive rocks, and because of this, is more often referred to as a folly rather than a "proper" castle or chapel.
The entire site around Carn Brea dates to Neolithic times, circa 3700 BC after which it became an iron age settlement. Many archaeological finds have been uncovered across the area, most of which reside in local museums.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.