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
I must go down to the seas again, to the lonely sea and the sky. And all I ask is a tall ship and a star to steer her by; And the wheel's kick and the wind's song and the white sail's shaking, And a grey mist on the sea's face, and a gray dawn breaking.