Halong Bay is located in the west of the Gulf of Tonkin, about 170 km from Hanoi. Halong Bay has a total area of 1,553 km2, including 1,969 large and small islands and two famous bays: Bai Tu Long Bay in the east and Lan Ha Bay where there is Cat Ba Island in the south.
Halong Bay is famous for its magnificent rocky island and cave systems. There are hundreds of rocky islands, in which each island has a very different and lively shape such as Human Head Islet, Dragon Islet, La Vong Islet, Sail Islet, Hon Tam Islet, Lu Huong Islet, Toad Islet, Trong Mai Islet. Hidden in the rocky islands are the spectacular caves associated with many miraculous legends such as Thien Cung Cave, Dau Go Cave, Sung Sot Cave, Trinh Nu Cave, Tam Cung Cave. These are actually the masterpieces of nature on the earth.
Halong Bay is known not only as a UNESCO World Heritage Site but also one of the most famous natural wonders in the world. With many beautiful landscapes, rich fauna and flora with the great archeological and geological significance associated with the cultural and historical value, Halong Bay is considered one of the most famous destinations of Vietnam with foreign tourists.