Botanical World Adventures is off SR 19 at Milepost 16, following signs to 31-240 Old Māmalahoa Hwy. This sprawling park on Hawai‘i's Hamakua Coast features lush World Botanical Gardens, Segway Rain Forest Tours and Zip Isle Zipline Tour.World Botanical Gardens covers 300 acres that include Rainbow Walk, filled with 100 species of bromeliads; a wall covered with wild orchids; the Children's Maze; the Honopueo Stream and its waterfalls; and the beautiful Kamae‘e Falls, reached by a scenic drive. Visitors can also hike along nature trails and stroll among mango, guava, banana and papaya trees and pineapple plants. Guided garden and waterfall tours are available by reservation.Guided tours are available. Picnicking is permitted.