Cornwall's coastline rewards a short visit if you prioritize its most striking sights. Tintagel Castle perches dramatically on cliffs steeped in Arthurian legend, while St Michael's Mount rises from the sea as a tidal fortress reachable by causeway at low tide. For a change of pace, the Eden Project's giant biomes showcase rainforest and Mediterranean ecosystems under one roof, and the Lost Gardens of Heligan offer a wilder, romantic contrast nearby. Add the working charm of Port Isaac Harbour or a wave at Fistral Beach, and this list balances history, nature, and coastal life in a compact route.