The United Nations Educational, Scientific and Cultural Organization (UNESCO) designates World Heritage Sites of outstanding universal value to cultural or natural heritage which have been nominated by countries which are signatories to the UNESCO World Heritage Convention, established in 1972.^[1] Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites). Natural features (consisting of physical and biological formations), geological and physiographical formations (including habitats of threatened species of animals and plants), and natural sites which are important from the point of view of science, conservation or natural beauty, are defined as natural heritage.^[2] Laos, officially the Lao People's Democratic Republic, ratified the convention on 20 March 1987.^[3]

Luang Prabang

Vat Phou

Plain of Jars

Location of World Heritage Sites in Laos

As of 2022^[update], Laos has three sites on the list. The town of Luang Prabang was listed in 1995, Vat Phou in 2001, and the Plain of Jars in 2019.^[3] All three sites are cultural. In addition, Laos has two sites on its tentative list.^[3]

UNESCO lists sites under ten criteria; each entry must meet at least one of the criteria. Criteria i through vi are cultural, and vii through x are natural.^[4]

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World Heritage Sites

Site	Image	Location (province)	Year listed	UNESCO data	Description
Town of Luang Prabang		Luang Prabang	1995	479bis; ii, iv, v (cultural)	Luang Prabang, the capital of the Lan Xang kingdom between the 14th and 16th centuries, was the royal and religious seat of the French protectorate of Laos between 1893 and 1946. The architecture of the city represents fusion of two styles: the traditional Lao and that of colonial Europe from the late 19th and early 20th century. Buildings include Buddhist temples, administrative and residential buildings. The town is well preserved. A minor boundary modification took place in 2013.[5]
Vat Phou and Associated Ancient Settlements within the Champasak Cultural Landscape		Champasak	2001	481; iii, iv, vi (cultural)	Vat Phou (ruins pictured) is a Hindu temple constructed under the Khmer Empire which controlled the region from the 10th to 14th centuries. The cultural landscape also includes the remains of temples, towns, and water management structures, dating from the 5th to 15th centuries. The layout of the temple reflects the Hindu concept of an axis connecting mount Phou Khao with the Mekong river.[6]
Megalithic Jar Sites in Xiengkhuang – Plain of Jars		Xiangkhouang	2019	1587; iii (cultural)	This site comprises 15 individual locations with remains of an Iron Age megalithic culture that existed roughly from 500 BCE to 500 CE. The "jars" refer to more than 2000 tubular stone jars that were used for funerary practices. There are also stone disks that were perhaps used as lids for the jars, other burial sites, and quarries, present at the locations.[7]

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In addition to sites inscribed on the World Heritage List, member states can maintain a list of tentative sites that they may consider for nomination. Nominations for the World Heritage List are only accepted if the site was previously listed on the tentative list.^[8] As of 2022^[update], Laos lists two properties on its tentative list.^[3]