A visit to Vietnam can not be complete without visiting the UNESCO world heritage site Hạ Long Bay. A collection over 1960 limestone islands and islets in the Gulf of Tonkin are divided into three sections, Hạ Long, Bái Tử Long and Lan Ha Bay. Ha Long Bay is the most popular section to visit for tourists, Bái Tử Long Bay is a protected national park and requires permission to take tourists to this part of Hạ Long Bay. Continue Reading