This is one of the best places to visit in Sri Lanka if you want to explore the pre-historic civilizations that date back to over 30,000 years. Fa Hien Caves is a natural attraction, and this has been home to the Chinese travelling monk 'Fa Hien' once. Human fossils, as well as those of floral species, have been found during excavations, and strong shreds of evidence also have been found to imply that there has been an advanced technology used by the pre-historic man.