NiihauApprox. Time: 4 hours
Activity Level: Easiest

The owners of Niihau seek to keep the island a sacred and secluded haven for true Hawaiian culture, hence the nickname "Forbidden Island." In fact, tours to the divine island, only allowed since 1987, take care not to allow contact with island dwellers in order to maintain the preservation of the rustic Hawaiian-language-only culture (the island does not even have telephones).