Nguyễn Trãi
500 years ago, Nguyễn Trãi praised the beauty of Ha Long Bay in his verse "Lộ nhập Vân Đồn", in which he called it "rock wonder in the sky". In 1962, the Ministry of Culture, Sports and Tourism of North Vietnam listed Ha Long Bay in the National Relics and Landscapes publication. In 1994, the core zone of Ha Long Bay was listed as a World Heritage Site according to Criterion VII, and listed for a second time according to Criterion VIII.