St Micheals mount, Penzance. Cross the crossway at low tide and explore the castle and its beautiful gardens. Legend says a giant threw the rocks into the sea in anger. Just make sure you time it right on the way back. The tide races in fast and can cut of the unwary walker, so take one of the many boats back
Glastonbury Tor Since the alleged discovery of Arthur and Guinevere's remains in the 12th century, it has been claimed that Glastonbury Tor stands on the site of ancient Avalon, the island where Arthur died following his final battle against Mordred. Once surrounded by marshland, Glastonbury Tor was virtually an island during the Dark Ages.