Bodmin Moor is the largest and highest of the granite moors of Cornwall; all the high hills of Cornwall are in Bodmin Moor. The climate is generally mild, with much frontal rain. The varied scenery and historical monuments attract many tourists to Cornwall. Tintagel Castle is on the north coast of Cornwall. Falmouth harbour is one of the largest natural harbours in the world. Newquay is one of the larger holiday resorts and popular with surfers. Land's End is the headland at the far southwest of Cornwall and Lizard Point is the most southerly headland in the county. The main rivers of Cornwall are the River Camel whose estuary is next to Padstow on the north coast, the River Fal which flows into the English Channel east of Falmouth, and the River Fowey which flows into the English Channel at Fowey. Apart from Truro, the county town, the main towns of Cornwall are St Austell, Saltash, Bodmin, Launceston, Falmouth, Camborne, Redruth and Penzance.