Looking for 9 Best Things to Do on the Island of Kauai 1. Visit Waimea Canyon and Koke’e State Park2. Stroll in Old Koloa Town3. Take a boat trip along the Na Pali Coast4. Relax on Poipu Beach5. Discover Hanalei Bay6. Enjoy the view from Hanalei Valley Lookout7. Visit the Prin...