South Point Green Sand Beach (Papakolea)
One of only four green sand beaches in the world, located at the southernmost point of the United States. The green color comes from olivine crystals in the volcanic cinder cone that surrounds the beach. Reaching it requires a 5.5-mile round trip hike across windy grassland or arranging a local shuttle ride. The beach sits in a cinder cone amphitheater with dramatic cliffs and crashing waves. The green sand is genuinely remarkable and kids love collecting (and then returning) the tiny green crystals. Swimming is rough and not recommended.