As a UNESCO heritage site, Ha Long Bay in the northern province of Quang Ninh is one of Vietnam's most popular tourist attractions.
UNESCO describes the bay as a 'spectacular seascape of limestone pillars'
Thousands of islands and islets rise from the sea
Located 165km from Ha Noi, Ha Long Bay covers a 43,400ha area, including more than 1,600 islands and islets, most of them uninhabited
Spectacular view of Ha Long Bay from above
Ha Long Bay welcomes million of visitors a year, making Quang Ninh a tourist magnet