A gateway to Laos, Ubon Ratchathani is bordered to the east by the Mekong River and Laos, to the south by Cambodia, to the west by Yasothon and Sisaket Provinces and to the north by Amnat Charoen Province. The provincial capital is approximately 630 kilometers northeast of Bangkok.

The province is unique in its folk culture, which is expressed in the indigenous cuisine, handicrafts, such as silk and cotton products, basketry, and bronze-ware, and traditional events such as the Candle festival held every July. There are natural beauties and historical sites including the 4,000 years old rock formation, prehistoric rock paintings, national parks, waterfalls, and the two-colored river, etc.

Kaeng Tana National Park
This park can be reached on two routes. The first route is by taking Highway No. 2222 where visitors will be presented with a beautiful view of Kaeng Tana. On the other hand, visitors can take the route to the National Park Office along Highway No. 217 (Phibun Mangsahan-Chong Mek route) and turning left onto Highway No. 2173 and proceeding for another 13 kilometers.
 
Khong Chiam District
The Khong Chiam district overlooks the Mekhong River and is located 80 kilometers from Ubon Ratchathani. Boat rental services are available here to go to Kaeng Tana cataract and to go sightseeing at Mae Nam Song Si or the bicolor river where the Mekhong and Mun Rivers meet.
 
Maenam Song Si
Maenam Song Si or the Bi-colored River or the Mun Rivers alluvium, is the place where two rivers join: the brown Mekong River and the blue Mun River. It is located in Khong Chiam District, about 84 kilometers from Ubon Ratchathai City centre. Visitors can hire a boat from Khong Chiam district to see the alluvium.
 
Namtok Saeng Chan
This waterfall is only 1 kilometer from Thung Na Muang Waterfall. This is a very beautiful waterfall with a special characteristic of its own the small stream of water cascades down the face of the cliff through an opening in the rock resembling a hole. Visitors viewing the waterfall at noon when the sunlight shines through the hole will be presented with a view of the cascading water similar to that of the full moon shining onto the world. Travelling can be made from Highway No. 2134, followed by Highway No. 2112, and then turning right to the waterfall.
 
Namtok Soi Sawan
This is a big waterfall cascading from two sides of steep cliffs about 20 metres high and is located 30 kilometers from Khong Chiam District.
 
Namtok Tat Ton
This waterfall is on Highway No. 2173, which is about 6 kilometers off Highway No. 217. This beautiful waterfall is created from Tat Ton Brook flowing past a stone platform and plunging onto the plain forming a basin large enough to swim in that is surrounded by flowering shrubs and forests in the shady area.
 
Pak Mun Dam
Constructed from stone and reinforced with clay soil, this dam has a width of 17 metres and a length of 300 metres. The dam, which facilitates agriculture and generates electricity, is located approximately 75 kilometers from town, or about 6 kilometers from the area where the Mekong River meets the Mun River. It is possible to travel along the top of the dam wall as a short cut from Khong Chiam District to Amphoe Sirinthon without driving back to Phibun Mangsahan District. Cruising along the beautiful Mun River is possible from the end of the dam to the Bicolored River, where the Mun River joins with the Mekong River.
 
Pha Taem National Park
This park covers an area of 140 square kilometers, where plateaus and hills dominate the parks landscape. There are sheer cliffs, which resulted from earthquakes. Most trees are of the deciduous dipterocarp forest. Irregular shaped sandstone is found scattered throughout the area. Beautiful flowering plants grow among the rocky ground. Travelling can be made from Khong Chiam District along Highway No. 2134, followed by Highway No. 2112, and then turning right for another 5 kilometers. Places of interest within the park are:

Pha Taem and Pha Kham are located near the national park headquarters. On the cliffs surface are numerous prehistoric cave paintings dating back 3,000-4,000 years ago that offer insight into the way of life that existed during the pre-historic days and reflect the ancient lifestyle of the people who once lived in the area. These painting depict scenes of fishing, rice farming, figures of people, animals, hands and geometric designs. It should be noted that the most extensive site for cave paintings in the country is that of Pha Taem.

Home to one of the world’s oldest agrarian communities, Ubon Ratchathani is also the ‘cradle of northeastern civilisation’. Recently discovered archaeological evidence suggests that humans settled in the region between 14,000 to 6,000 years ago.
 
Sao Chaling
Sao Chaliang, which is 11 kilometers from Khong Chaim District on Highway 2112 is a place that is scattered with natural mushroom-like piles of stone slabs with a large amount of shells embedded in their surface. The area is believed by geologists to be a long dried up seabed (over a million years ago).
 

Tham Heo Sin Chai
This cave is on Highway No. 2222, about 7 kilometers before reaching Amphoe (district) Khong Chiam, turn left and proceed for about 2 kilometers. This cave, which is on the same route as Kaeng Tana, is a Buddhist center with a beautiful reclining Buddha image. In addition, there is a waterfall cascading down the cliff to the area in front of the reclining Buddha image making the place very cool and beautiful.
 
Tham Muet
Tham Muet means dark cave. It is at Ban Sa Som, is a cave approximately 4 meters wide and 6 meters high. Within the cave are many carved Buddha images, indicting that it used to be a place for religious ceremonies.
 
Wat Tham Khuha Sawan
This temple is on Highway No. 222 about 6 kilometers before reaching Khong Chiam District. The temple was built in 1978 by Luang Pu Kam Khaning Chula Mani and was his residence and place of meditation during his lifetime. Despite the fact that he passed away many years ago, his body remains in perfect condition. Along the route to the temple are numerous scenic spots for visitors to admire the beauty of the Mekong River and the Laotian border.