Ha Long Bay scenery is considered exceptional landscape on earth. Mr. James Thorsell, Director of International Union for Conservation of Nature (IUCN) said: "The tall of pillars of rock and rugged islands rising from Ha Long water surface are unique with perfect picturesque scenery endowed by nature, specially archeological heritage. It is worthy to be preserved and recorded in the World Heritage List as a Natural Heritage site” .

The geological history of Ha Long bay area spans for about 3 billion years and is scientifically recorded for 500 million years. Evidence of geological evolution and tectonic movement,including fault zones,geodesy, geysers, basins, and formations that marked dramatic changes in paleo-geographical conditions in the area. Halong Bay has experienced many periods of marine transgression-regression, thus it contains precious values to the Anthropoceneand marine geology.

Ha Long Bay is located in the geographical area connected between Bai Tu Long Bay and Cat Ba Archipelago forming a sea - island complex with favorable natural conditions to form a diverse system of habitats sea and island. This is the basis for the formation of biodiversity for Ha Long Bay. Scientists have evaluated Ha Long Bay as a high biodiversity area. The biodiversity value of Ha Long Bayinclude the diversity of ecosystems, the diversity of rare and diverse genetic resources of species composition.

Ha Long Area is one of the Homes to the Ancient Viet people.