UBONRATCHATHANI Ubon Ratchathani has been a well established community for hundreds of years. Relatively unknown to the most tourists, the province boasts a number of natural wonders, cultural and historical attractions, national parks, silk producing shops, etc. 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.