Vientiane is the capital city of Laos, situated in the Mekong Valley. It is also Laos's largest city. The estimated population of the city is 200,000 (2005). Although a small city still, the capital has many sites for tourists to see. The city contains many temples and Buddhist monument with Pha That Luang, a Buddhist stupa, one of the most famous in Laos. It is the most important national cultural monument and very popular amongst foreign tourist.