Thakhek

Phu Hin Bun National Park - You can go hiking in this park, where there are many marked trails. You can also swim in Khoun Kong Leng or the Blue Lagoon located on this national park. You can book guided hikes through your hotels or guest house, which costs around 276952 LAK to 461588 LAK (30 to 50 USD) per person depending on the trail and the number of days.

Konglor Cave - The Konglor cave is situated in the Phou Hin Bun National Park, for which there's a 2000 LAK entrance fee. It is a 7 km cave through which the Nam Hinboun River flows. Tourists can get on motorized longboats to view the caves and huge limestone formations. The caves are partly lit and you'll need headlamps. Also, you'll pass through roofs dripping with water. The entrance fee of the cave is another 10,000 LAK. The return trip through the cave in a longboat costs about 92317 LAK (10 USD), which is less if in a group. To reach the cave, rent a taxi or tuk-tuk, as it takes about 3 hours to reach due to bad roads.

Tham Pha Fa Cave - Popularly known as the Buddha cave due to more than 200 statues found here, Tham Pha Fa is another popular attraction from Thakhek. The journey to this cave is very scenic, which passes through winding limestone mountains.

Aen Cave & The Falang - Aen is a commercialised cave, which is lit for the tourists. There is a river running out of the mouth which forms a swimming pool at the back, which is called the Falang.

The Nam Theun 2 Visitors Centre - The Nam Theun 2 Visitors’ Centre is a gallery housing the details of all the hydroelectric projects of Laos. It consists of a theatre and an exhibition room.