Sri Lanka is a very beautiful country. I went there in Dec 2013. You should visit the coastal town of Pasikudah, Kandy for their famous Temple of the Tooth. If you wanna do white-water rafting, you should definitely head to Kithugala. Head to Nurawa Eliya for Horton's Plain for a hike! It's very cold up there and very beautiful with all the tea plantations.