Ha Long Bay is a UNESCO World Heritage Site and the name Ha Long means "descending dragon".

The bay consists of a dense cluster of some 1,600 limestone monolithic islands each topped with thick jungle vegetation. Hang Dau Go (Wooden stakes cave) is the largest grotto in the Ha Long area which was discovered by French tourists in the late 19th century. 

The movies “Pan”, “Kong: Skull Island”, and “James Bond - Tomorrow Never Dies” were all filmed here