Si Sa Ket province is located in the southern portion of Thailand’s Northeastern Isan region. As Si Sa Ket borders Cambodia there are a number of Khmer ruins throughout the region and the history of the provincial capital is believed to date back to the Angkorian era.
Rich with Khmer Ruins, Si Sa Ket is an interesting destination. In addition to serving as the gateway to visit Preah Vihear (Phra Vihan), the cliff-top Khmer temple across the border in Cambodia, the province has plenty of fruit, such as rambutan and durian, which are available at the beginning of rainy season.
(http://www.tourismthailand.org/where-to-go/cities-guide/destination/si-sa-ket/)