South Koreans illuminate the streets with lotus lanterns to mark the upcoming Buddha's birthday, or “Seokga Tansinil” in Korean, on Sunday in Seoul. / VCG Photo

People dress up and take part in the lantern parade for the widely celebrated festival. / VCG Photo

Scholars believe Buddha was born around 25 centuries ago with unknown exact date and people in South Korea traditionally celebrate his birthday on the full moon in May. This year the day falls on May 12. / VCG Photo

Many temples across the country will provide free meals and tea to all visitors during the festival. / VCG Photo