Pha That Luang Located in Vientiane, Pha That Luang (“Great Stupa in Lao”) is one of the most significant monument in Laos. The stupa has several terraces with each level representing a different stage of Buddhist enlightenment. The lowest level represents the material world; the highest level represents the world of nothingness. Pha That Luang was built in the 16th century on the ruins of an earlier Khmer temple. Pha That Luang was smashed by a Siamese invasion in 1828, then later reconstructed by the French in 1931.