For those who enter Vietnam from China through Lang Son

 In Lang Son, there is a clear distinction between seasons of a typical climate of the Northern Vietnam.

 Highlights of Lang Son are the two large and beautiful caves just 2.5km from Lang Son's centre named Tam Thanh and Nhi Thanh.

 Lang Son is a mountainous area located farther north where the 0 km landmark of National Highway 1A starts (Friendship gate) and largely populated by Tho

 It was built in Ly dynasty (Great Vietnam). This is a military architectural works belonging to ChiLang ward – LangSon city. It has high value in term of history as well as unique architecture. Doan Citadel in LangSon is first built to be a defending rampart (military), and then it became a city – an administrative center. It has been ranked as a national vestige.

  The average population is 733 700 persons (the year 2001). The population density is 88 persons per square kilometer.

Area: 8,305.2 sq. km Population: 739,300 habitants (2005) Capital: Lang Son City. Districts: Trang Dinh, Van Lang, Van Quan, Binh Gia, Bac Son, Huu Lung, Chi Lang, Cao Loc, Loc Binh, Dinh Lap. Ethnic groups: Viet (Kinh), Tay, Nung, Dao...