It is belived that the King Ravana had  worshipped the ancient temple of Koneswaram. The giant statute of Ravana  worshipped at the Sita Amman temple in Sita Eliya where  Lord Rama’s wife was  imprisoned. Mysterious rock of Rumassala with its strange herbs a piece from the Himalayas that Hanuman dropped. You can learn much about the Hindu literary Epic Ramayanaya in Sri Lanka.