The grave of 13th-century ruler Chief Roi Mata was discovered by French archaeologist Jose Garranger in 1967 and—along with the settlement site of Mangaas (Roi Mata’s residence) and a cave on nearby Lelepa Island (where he died)—is now classified as a UNESCO World Heritage Site. Although there are no archaeological remains to see, tours vividly conjure up the ruler’s life and story and often involve meeting local communities as well as opportunities for swimming and snorkeling.