Flying from Oahu to Kauai, you'll visit stunning Waimea Canyon, and take a cruise on the Wailua River to the romantic Fern Grotto. You'll also see Russian Fort, Koloa Sugar Mill, Queen Victoria's profile, Nawiliwili Harbor and Coco Palms Grove, which were featured in the Elvis Presley movie "Blue Hawaii."Other tour highlights on the Honolulu to Kauai day trip include Spouting Horn, a lava tube resembling the spout of a whale, Opaekaa Falls, the royal birth stones and a drive through the south-coast Poipu Resort.