Stop at the company's visitors center for a free tour and tasting and to buy macadamia nuts where they grow, at good prices. It's on the way to the volcano and reached via a long, straight, roller-coaster road lined by orchards of macadamia nut trees and a more than 100-ft-/31-m-tall windbreak of Norfolk pines—Hawaii's Christmas tree. Daily 8:30 am-5 pm. Macadamia Road (5 mi/8 km south, off Highway 11), Hilo. Phone 808-982-6562. Toll-free 800-619-9370. http://www.maunaloa.com.
