Say aloha to tropical breezes, oceanfront luaus and iconic Diamond Head on Oahu, the most populated Hawaiian island. Follow in the sandprints of surfing forefather Duke Kahanamoku on Waikiki Beach, visit the royal quarters of Iolani Palace and tour Pearl Harbor. Sample hot malasadas (local donuts) and shaved ice while shopping for vintage floral-print shirts on Honolulu's Kapahulu Avenue. Get off the well-worn tourist path with a hike to Makapuu Lighthouse on the South Shore. You can even learn to hula.