India, July 26 -- The Okefenokee Swamp in Georgia, an ornate 13th-century Buddhist temple in Thailand and tidal flats in western South Korea were among several sites added to the World Heritage List on Saturday at a UN committee meeting in South Korea.

The UNESCO meetings in Busan, which continue through next Wednesday, are reviewing dozens of other nominations, including the D-Day landing beaches in France, Mount Olympus in Greece and the ancient Japanese capitals of Asuka-Fujiwara.

The Okefenokee Swamp is regarded as one of the world's largest freshwater ecosystems, encompassing a vast network of wetlands that supports exceptional biodiversity and serves as the source of two major rivers. Its largely undisturbed peat beds preserve a 5...