Cornwall ends Britain at Land's End and the Lizard, with St Ives' Tate gallery above the harbour, the Eden Project's biome domes in a clay pit, and the South West Coast Path tracing 630 miles of granite cliff.
Cornish hedgerows in flower with thrift, sea pinks, and bluebells, Padstow May Day Obby Oss, and surf at Fistral and Watergate Bay reliable.
Cornwall hits peak holiday density with A30 traffic snarled, but the Minack Theatre cliff productions run through summer and St Ives gallery interiors stay cool.
Sea still warm enough for surfing through October, Falmouth Oyster Festival in mid-October, and the Coast Path walkable without summer crowds.
Atlantic storms hammer the coast and Sennen and Porthcurno seas churn spectacular, but the Eden biomes and Tate St Ives stay open year-round.