Wat Xieng Thong had built since 2103 by God Setthathirath, the king of Lan Chang and Lan Na before he moved the capital from Luang Prabang to Vientiane.
Wat Xieng Thong is considered a "Temple Gate" and a berth in the north for journey of King of Luang Praban. This measure has been adopted especially in the second last king of Laos, Prajaomahachewit srisawangwhong and Prajaomahachewit srisawangwatthana.