Halong Bay is a bay in the Gulf of Tonkin, about 170 km from Hanoi. Halong Bay is made up of 1,969 islands of various sizes, 989 of which have been given names. This densely concentrated zone of stone islands has been named a UNESCO World Heritage Site. Visitors can cruised around Halong bay through hundreds of small islands with different shapes and sizes. It's an amazing scenery that you cannot find anywhere else.