Laos located in Southeast Asia shared border with Thailand, Burma, and Vietnam. They has history kingdom of LanXang from the 14th to the 18th century. in the Laos have 4 biogeography zone are recognized the northern Indochina hilly subtropical sector (most of the north) the Annam Trung Son mountain chain (bordering Vietnam from Bolikhamsai Province in the north to Attapeu in the south) Most of the areas are mountains complex. It is the origin of the river is an important river in line 13, the most important of the Lao People's and the international river is a Mekong river Season for travel have two season first one is winter start from November to January , second one is summer start from April to May