Vesak is considered a religious as well as a cultural festival in Sri Lanka.
Buddhists commemorate the important events that took place in the life of Lord Buddha on this Vesak Full Moon Poya Day. First comes the birth of Siddhartha Gautama in Lumbini in Nepal which took place under the arbor of Sat trees where queen Mahamaya gave birth to him. The second event was Siddharta Gautama's supreme attainment as the Buddha, the Enlightened One. The third event was Lord Buddha's Parinibbana over 2500 years ago at Kusinagar.