Carved by the Quây Sơn River, this magnificent tiered waterfall spans about 300 metres in width and cascades down 30 meters, making it the largest natural falls in Southeast Asia and the fourth largest transboundary waterfall in the world. Located on a remote border between Vietnam’s Cao Bằng Province and China’s Guangxi region, the Bản Giốc Waterfall (known as the Detian Falls in China) is one of Asia’s most spectacular natural wonders, rivalling Plitvice in Croatia.