Seeking a tropical paradise that's also an outdoor-adventurer's fantasy island? Come to Kaua'i, where nature lovers, water babies and beach bums alike come to escape. Whether hiking the velvety green Na Pali cliffs, helicoptering over the blood-red Waimea Canyon or floating in the blue bliss of Hanalei Bay, the very best of Hawaii's colourful Garden Isle is revealed in this in-depth guide.