There are so many historical sites in Sri Lanka and the archaeological researchers found the earliest human being lived in Sri Lanka are dated back to 35000 years. And they are called "Balangoda Manawaya". Sri Lanka has written history dated back to 5th century CE. There are many archaeological sites in Sri Lanka.
I have visited many times to ancient archaeological cities in Sri Lanka and I too some photos,
Apart from ancient cities there are so many beautiful place to visit in Sri Lanka. If you are planing for a holiday next time do consider travelling to Sri Lanka.