Travel and Tourism in Laos

South Laos: Champasak, Vat Phou, and the Four Thousand Islands

The south of Laos is the least visited region of the country by most international tourists, who tend to concentrate their time in Luang Prabang and Vientiane before crossing into Thailand or Vietnam. This is the south's great advantage. The provinces of Champasak, Savannakhet, Sekong, and Attapeu offer a version of Laos that is even less touched by the tourist economy than the north, with landscapes of extraordinary beauty, archaeological sites of world significance, and an unhurried pace of life that feels genuinely remote from the concerns of the wider world.

Pakse, the capital of Champasak province, is the main gateway to the south, a bustling provincial city at the confluence of the Mekong and the Xe Don rivers that serves primarily as a staging post for travelers heading south to the great Khmer temple complex of Vat Phou or east to the Bolaven Plateau. It has a busy market, some fine traditional shophouses along the riverfront, and a colonial-era architecture that is more austere than Luang Prabang's but has its own modest charm.

Vat Phou, or Wat Phu, is the great archaeological treasure of southern Laos and one of the most extraordinary ancient sites in Southeast Asia. Built by the Khmer Empire between the fifth and fifteenth centuries CE, and thus predating the famous temples of Angkor in Cambodia, Vat Phou was a major religious complex dedicated to the Hindu god Shiva and situated to take maximum advantage of its extraordinary setting. The principal sanctuary is built into the face of a cliff at the base of Phou Kao mountain, whose peak was believed to resemble the Shiva lingam and to be particularly sacred. The complex is laid out on a north-south axis extending from the Mekong valley up to the cliff sanctuary, a distance of approximately 1.4 kilometers, with a series of processional ways, ponds, gateways, and subsidiary shrines culminating in the main temple at the top.

The UNESCO World Heritage designation of Vat Phou and the Associated Ancient Settlements within the Champasak Cultural Landscape, granted in 2001, recognizes not just the temple complex itself but the broader cultural landscape of which it is the centerpiece, including the ancient city plan of Champasak, the pilgrimage routes and waterworks that served the complex, and the sacred geography of Phou Kao mountain and the Mekong valley. The designation acknowledges that Vat Phou represents an outstanding example of the interaction between nature and humanity in the creation of a sacred landscape, and that the complex demonstrates the cultural interchange between Hinduism and Buddhism across many centuries.

The approach to Vat Phou from the valley floor, walking the ancient processional way past restored ponds and gateway pavilions, is one of the great architectural approaches in Southeast Asia. The jungle trees that line the path are enormous, and the sound of birds in the canopy above accompanies the walk. As the path climbs toward the cliff, the sanctuary gradually comes into view, built into the face of the mountain itself, with the peak of Phou Kao visible above. The main sanctuary, now roofless, preserves remarkable carved decorations including the sacred spring that still flows from a crack in the mountain face directly into the temple, an arrangement that was clearly fundamental to the site's selection and sanctity. The views from the sanctuary back down the processional way to the Mekong and the flat plains beyond, with the mountains of Cambodia visible in the distance, are magnificent.

Si Phan Don, meaning the Four Thousand Islands, is the name given to the extraordinary stretch of the Mekong near the Cambodian border where the river, here sometimes 14 kilometers wide, divides around a vast archipelago of islands, sandbars, and channels. In the dry season, the river drops to reveal thousands of sandy islets. In the wet season, most of these disappear beneath the water, leaving only the larger islands above the flood. The permanent inhabited islands include Don Khong, the largest, and the smaller Don Det and Don Khon, which have become the primary tourist destinations in the area.

Don Det and Don Khon are connected by a French-era bridge and together form the center of a backpacker culture that is entirely different in character from anything else in Laos. These are islands where the primary activity is doing very little, very slowly. Guesthouses built on stilts over the Mekong, hammocks strung between posts on bamboo platforms extending over the river, bicycles for exploring the flat paths between villages and rice fields, and the overwhelming presence of the river in all directions create an environment of almost perfect relaxation. The pace of life here is measured by the movement of the Mekong, by the shadows of the palm trees moving across the paths, by the sound of roosters and the smell of river fish cooking over charcoal fires.

But Si Phan Don is not merely a backpacker retreat. It is also home to the last surviving population of Irrawaddy dolphins in the Mekong River, a critically endangered subspecies that has been reduced to approximately a dozen individuals in this stretch of the river and is considered by conservation organizations to be among the most endangered river dolphin populations in the world. The dolphins can be observed from boats in the channels near Don Khon, where they feed in the deeper pools at the edge of the main river channel. Sightings are not guaranteed but are frequent enough that visitors who spend several days in Si Phan Don have a good chance of witnessing these extraordinary animals, which surface with a distinctive rounded back and small dorsal fin that is immediately recognizable once seen. The dolphins face numerous threats including entanglement in fishing nets, boat traffic, and the construction of hydropower dams on the Mekong and its tributaries that disrupt their food supply and restrict their movement.

Khone Phapheng Falls, situated near Don Khon, are the largest waterfall in Southeast Asia by volume and one of the most impressive natural features of the Mekong River. Created by a dramatic drop in the riverbed where the Mekong crosses the geological boundary between the soft sedimentary rocks of Cambodia and the harder rocks of the Lao plateau, the falls are not especially high but are enormous in their horizontal extent, stretching across the full width of the river in a chaos of white water, spray, and roaring sound that is audible from kilometers away. The force of the water is extraordinary, and the experience of standing at the edge of the viewing platforms above the falls, feeling the mist on the face and hearing the thunder of the river, is deeply impressive. The falls were the reason that the French colonial project of establishing steamboat navigation from the Mekong Delta in Vietnam all the way to China through Laos was ultimately impossible, as no vessel could navigate past this barrier, and a short railway was built on Don Khon to portage goods and passengers around the falls.

The Four UNESCO World Heritage Sites

Laos is home to four UNESCO World Heritage Sites, a remarkable concentration of outstanding universal value for a country of its size and population. Each of the three sites represents a different dimension of Lao civilization and natural heritage, and together they provide a framework for understanding what makes Laos genuinely significant in the context of Southeast Asian and world cultural history.

The Town of Luang Prabang, inscribed in 1995, was the first UNESCO designation in Laos and remains the most transformative in terms of its impact on the country's development as a tourism destination. The inscription recognized Luang Prabang as an outstanding example of the fusion of traditional Lao architecture and urban structures with those introduced by the European colonial powers in the nineteenth and twentieth centuries, and noted the preservation of traditional townscapes that had largely disappeared elsewhere in the region. The World Heritage status brought immediate international attention and resources, establishing conservation frameworks, funding restoration projects, and creating the regulatory environment that has prevented the kind of uncontrolled development that has degraded historic cities elsewhere in Southeast Asia. The success of Luang Prabang as a UNESCO World Heritage Site, measured in terms of both conservation outcomes and tourism development, has been widely studied as a model for the integration of heritage protection and economic development.

Vat Phou and Associated Ancient Settlements within the Champasak Cultural Landscape, inscribed in 2001, recognizes an area of outstanding universal value that encompasses not just the Khmer temple complex itself but the broader sacred landscape of the Mekong valley and Phou Kao mountain within which it is set. The inscription acknowledges Vat Phou as outstanding testimony to the development of a cultural landscape over more than a millennium, demonstrating the cultural interchange between Hinduism and Buddhism, and between the Khmer and Cham and Mon-Khmer civilizations of the region. The site is less visited than Luang Prabang and the Plain of Jars, partly because of its remoteness from the main tourist circuits, but for those who make the journey it represents one of the most profound and moving ancient sites in Southeast Asia, a place where the intersection of natural landscape and human devotion across a period of fifteen centuries is felt immediately and powerfully.

The Megalithic Jar Sites in Xiengkhuang, inscribed in 2019, is the most recent of Laos's four UNESCO designations and the one that has attracted the most international academic attention in recent years. The inscription recognizes the sites as providing exceptional testimony to an Iron Age civilization in Southeast Asia for which very little other evidence survives, and as an outstanding example of a type of monument ensemble that illustrates a significant stage in human history. The designation has focused international attention on the ongoing work of archaeological research at the sites and on the importance of continuing demining operations to make more of the hundreds of known sites accessible to researchers and visitors.

A fourth World Heritage Site was added to Laos in July 2025 when Hin Nam No National Park became the country's first natural UNESCO inscription. Located in Khammouane Province in central Laos along the border with Vietnam, Hin Nam No is one of the largest karst landscapes in Southeast Asia, a vast wilderness of towering limestone mountains, rivers emerging from underground cave systems, and extraordinary biodiversity including species found nowhere else on earth. The park's inscription is a milestone for Laos and a recognition of its extraordinary natural heritage alongside its celebrated cultural sites.