Top 10 Ancient Ruins in Laos
Laos is the least-visited country in mainland Southeast Asia, and its archaeological heritage is correspondingly underexplored. A landlocked nation of mountains and rivers, it was long a corridor and borderland between the great lowland civilisations of the Mekong valley, the Khmer empire to the south, and the Cham and Vietnamese cultures to the east. The southern plateau of Champassak was part of the Khmer cultural sphere, and the great temple of Wat Phou there predates Angkor as a centre of Hindu-Buddhist kingship. The central plateau of Xieng Khouang hides one of the most enigmatic prehistoric monuments in the world: the Plain of Jars, where thousands of stone vessels of unknown purpose lie scattered across open grassland. The UNESCO-listed historic town of Luang Prabang preserves the physical fabric of the Lan Xang kingdom, the medieval 'Land of a Million Elephants.' Laos's ruins are few in number but exceptional in character, and the country's general quietness makes visiting them a distinctively peaceful experience.
1. Wat Phou (Vat Phou), Champassak
Wat Phou is the most important pre-Angkorean Hindu temple complex in mainland Southeast Asia, built on the lower slopes of the sacred mountain Phu Kao and connected by a processional causeway to the Mekong River. The site was already sacred in the 5th and 6th centuries AD, when it served as a centre of Khmer royal power, and the main temple structures visible today date from the 11th and 12th centuries during the height of Khmer influence. The complex runs up the hillside in a series of terraces, with a reservoir at the base, pavilions in the middle terrace, and the main sandstone sanctuary at the top, its back carved from the living rock of the cliff. A sacred spring issues from the cliff beside the sanctuary. The approach through ancient trees and crumbling carved doorways is among the finest heritage experiences in Southeast Asia. Wat Phou is a UNESCO World Heritage Site.
2. Plain of Jars, Xieng Khouang
The Plain of Jars (Thong Hai Hin) on the Xieng Khouang plateau consists of hundreds of sites scattered across a mountain landscape, containing stone jars ranging from under 1 metre to over 3 metres in height and weighing up to 14 tonnes. The jars are associated with the Iron Age period, roughly from 500 BC to 500 AD, and their purpose remains debated: most scholars believe they were used in funerary rituals, as secondary burial containers or as repositories for the offerings accompanying the dead. Excavations at several sites have found human remains, glass beads, ceramics, and iron objects around and inside the jars. The plateau was heavily bombed during the Indochina Wars, and unexploded ordnance still restricts access to many sites. Three main sites (Sites 1, 2, and 3) have been cleared and are accessible to visitors; more are being progressively opened. The Plain of Jars was inscribed as a UNESCO World Heritage Site in 2019.
3. Luang Prabang, Northern Laos
Luang Prabang, at the confluence of the Nam Khan and Mekong rivers, is the former royal capital of the Lan Xang kingdom (founded around 1353 AD) and the most intact traditional city in mainland Southeast Asia. The historic zone, a UNESCO World Heritage Site since 1995, preserves over thirty Buddhist temple complexes (wats), royal palace buildings, and traditional Lao wooden houses in a compact peninsula. The oldest surviving religious buildings date to the 16th century. Wat Xieng Thong, built in 1560 and never destroyed, is the architectural masterpiece of Lao temple building, with its low-sweeping roof that almost touches the ground and its extraordinary mosaic facade. The Pha Bang — the sacred golden Buddha image that gives the city its name — is housed in the Royal Palace Museum. Luang Prabang is easily reached by air from Vientiane and Bangkok.
4. Hintang Archaeological Park, Houaphan
The Hintang archaeological park in Houaphan Province in northeastern Laos contains funerary monuments of a distinctive type: large carved stone discs and stelae set upright in the ground on hilltops, associated with the Tai-speaking cultures of the region in the early to mid 2nd millennium AD. The discs and stelae appear to mark elite graves. Some sites also contain tall cylindrical stone posts. The Hintang region is remote and difficult to access, requiring significant overland travel from the provincial capital Sam Neua, but it is among the least-known and most intriguing archaeological landscapes in Southeast Asia. Limited systematic archaeological work has been conducted, and the monuments are a significant gap in the region's cultural heritage documentation.
5. That Luang Stupa, Vientiane
That Luang ('Great Sacred Stupa') in Vientiane is the most important national monument in Laos and a symbol of Lao Buddhism and sovereignty. The present structure dates primarily from the 16th century when King Setthathirath commissioned a new stupa over an earlier Khmer structure thought to contain a relic of the Buddha. Excavations have documented the Khmer-period remains beneath the central tower. The stupa stands over 45 metres high and is gilded with gold, surrounded by a cloister wall with 30 smaller stupas. The site's significance has been repeatedly asserted through reconstruction after Burmese invasion (1574), partial destruction by Chinese raiders (1828), and French archaeological restoration in the 20th century. That Luang is the site of the annual Bun That Luang festival, one of the most important religious celebrations in Laos.
6. Vang Sang (Elephant Village Rock Carvings)
The Vang Sang rock carvings northwest of Vientiane, carved into a cliff face above a forest site, constitute a group of Buddhist reliefs depicting standing Buddhas, dated to roughly the 11th–12th centuries AD. The carvings are in a remarkably good state of preservation given their outdoor location, with several figures over 1 metre in height still clearly defined. The site is associated with a natural spring and with legends of royal hunting grounds. Vang Sang is not widely known but is accessible on a half-day excursion from Vientiane, and the combination of forest setting, cliff face carvings, and temple structures makes it a rewarding alternative to the busier sites along the Mekong.
7. Wat Phra Keo, Vientiane
Wat Phra Keo was originally built in 1565 on the orders of King Setthathirath to house the famous Emerald Buddha (Phra Kaeo Morakot), which he had brought from Chiang Mai. The temple was looted and largely destroyed by the Siamese in 1778 — and the Emerald Buddha taken to Bangkok, where it remains in Wat Phra Kaew to this day. The building visible today is a faithful reconstruction completed in 1936 using surviving stone elements. It now serves as a national museum of religious art rather than an active temple. The carved door lintels, standing Buddha figures, and collection of Lao Buddhist art make it an essential stop in Vientiane for understanding the material culture of the Lan Xang kingdom.
8. Champassak Town and Khmer Sites
The town of Champassak on the Mekong, near Wat Phou, was the capital of the Lao principality of Champassak and earlier a significant Khmer administrative centre. The surrounding countryside contains numerous minor Khmer sanctuaries, boundary stones (sema), and the remains of the ancient ceremonial way that connected the Mekong landing to Wat Phou. The ceremonial causeway, flanked by naga balustrades, once extended several kilometres and was among the most ambitious landscape planning projects of the Khmer era. Sections of the causeway and its associated ponds remain visible, and the entire Champassak cultural landscape is part of the Wat Phou UNESCO property. The district is best explored by bicycle from Champassak town.
9. Khmer Prasat in the Bolaven Plateau Region
The Bolaven Plateau in southern Laos was within the sphere of Khmer influence during the Angkorean period (9th–15th centuries AD), and several Khmer-style brick and sandstone sanctuary towers survive in the region. These smaller provincial prasat (towers) reflect the reach of the Khmer religious and political system into upland areas. Sites such as Phu Asa and the brick towers near Salavan are rarely visited but represent the northernmost extent of Khmer brick architecture. The construction of these towers on hilltops followed the Khmer practice of identifying high places with sacred Mount Meru, the cosmic mountain of Hindu cosmology.
10. Dong Dok Archaeological Sites, Vientiane Plain
The Vientiane plain has yielded significant quantities of prehistoric material through agricultural and construction activity, suggesting dense pre-Angkorean settlement. Bronze Age and Iron Age sites on the plain document the long prehistory of the Mekong corridor before the emergence of historicised kingdoms. The Lao National Museum in Vientiane holds finds from these investigations alongside material from Wat Phou and the Plain of Jars, providing a necessary overview of Lao prehistory and history that frames individual site visits. The museum is a logical first stop in any heritage itinerary through the country.
The best time to visit Laos is October through March, during the cool dry season. Luang Prabang and Vientiane have frequent air connections to regional hubs. Wat Phou is reached from Pakse in the south, and the Plain of Jars from Phonsavan in the north. Unexploded ordnance remains a concern in the Xieng Khouang region; stay on cleared paths. Open the map to locate all the sites described here and plan an itinerary through this quiet but rewarding corner of Southeast Asian heritage.