Ubon Ratchathani City Little known to foreigners, Ubon Ratchathani is in fact an incredible place for holiday makers who prefer exploring a non-commercialised side of Thailand. A large province with so much going on, the province combines prehistoric civilisation, ancient traditions and customs with natural wonders particularly Pha Taem National Park where pre-historic cave paintings are present; you will be the first person to view the sunrise, before it becomes visible anywhere else in Thailand.