Ha Long Bay is one of the most iconic places in Vietnam. It was listed as a UNESCO World Heritage Site in 1994 and is also one of the Seven Natural Wonders of the World. It is an enormous bay with dark turquoise water and thousands of limestone karsts covered with thick vegetation.
The name means 'descending dragon' and according to legend, the karsts were formed from the dragons who came to protect the Vietnamese people from enemies. They scattered emeralds and jade - which formed the karsts- into the ocean to form a natural barrier and prevent any future invasions.