<P> 500 years ago , Nguyen Trai 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 . </P>
<P> 500 years ago , Nguyen Trai 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 . </P>
when did ha long bay become a world heritage site
when did ha long bay become a world heritage site
1994
1994