The largest, oldest, and Sri Lanka state religion is Theravada Buddhism. About 68.6% of the whole population follows Buddhism, including the majority of the Sinhalese population. Sri Lanka is home to many breathtakingly beautiful and ancient Buddhist temples worth visiting. Many temples were built by the kings and rulers of Sri Lanka starting from the 3rd Century BCE.
Here is the list of holiest and beautiful Buddhist temples in Sri Lanka that you should visit and get a better understanding of t