Stop off at the historic Dole Pineapple Plantation in Wahiawa to learn more about the tropical fruit that was once one of Hawaii's cash crops.  Test your quickness at the plantation's 3-acre Pineapple Garden Maze... that has been recognized by the Guinness Book of World Records as the World's Largest Maze.  The Pineapple Express train tour is also fun for kids of all ages, and the gift shop's pineapple ice cream is pure heaven.