The Sri Lankans follow the Theravada Buddhism way of life for the most part but the culture is also of a modern mix. The traditional aspects, however, are rooted in Buddhism. The culture first originated in India and then was brought over to Sri Lanka where it has been embraced.
Inisthe southern and central areas it is very strong. There is some diversity there, in the buildings and so forth but the main influence is Buddhist. You will also note Hindu temples and mosques along with Christian churches.