Setthathirath or Xaysettha is considered one of the great leaders in Lao history. Throughout the 1560s until his death, he successfully defended his kingdom of Lan Xang against military campaigns of Burmese conqueror Bayinnaung, who had already subdued Xieng Mai in 1558 and Ayutthaya in 1564. Setthathirath was a prolific builder and erected many Buddhist monuments including Wat Xieng Thong in Luang Prabang, Haw Phra Kaew, Wat Ong Teu Mahawihan and the Pha That Luang in Vientiane.
Statue of King Setthathirath Pha That Luang, Vientiane
Stupa of Wat Phra That Si Song Rak, Loei, Thailand, competed in 1563 by Setthathirath and King Maha Chakkraphat to cement the alliance between Lan Xang and Ayutthaya
Lao, sometimes referred to as Laotian, is the official language of Laos and a significant language in the Isan region of northeastern Thailand, where it is usually referred to as the Isan language. Spoken by over 3 million people in Laos and 3.2 million in all countries, it serves as a vital link in the cultural and social fabric of these areas. It is written in the Lao script, an abugida that evolved from ancient Tai scripts.
Wat Phra That Phanom in Nakhon Phanom. Built in the 16th century over earlier Khmer ruins when Isan was part of Lan Xang, the temple is an important place of pilgrimage, attracting Lao from Laos as well as Isan to its temple festivals.
Temple mural of Wat Photaram in Maha Sarakham Province. Dating to the reign of Siamese Ruler Rama III (1788–1851), the writing is in the Tai Noi script, an old form of the Lao alphabet.
A bilingual Lao-French street sign in Vientiane. Although the influence of French on the Lao language has waned considerably, hundreds of words of French origin are used in Laos.
Lao script on a sign at Wat That Luang, Vientiane.