This garden is a living treasure box of native Hawaiian coastal species and plants brought here by Polynesian voyagers in their seafaring canoes. Stroll beneath the shade of the hala and breadfruit trees while taking a self-guided audio tour. You’ll learn how the first Hawaiians made everything from medicine to musical instruments out of plants and trees. You can also take a docent-led tour ($10) by reservation only; they’re offered 10am weekdays when available. If the garden happens to be hosting a lei-making or kapadyeing workshop while you’re on the island, don’t miss it. Tip: Saturday is free admission.