Nong Khai is a border town on the bank of the Mekong River opposite the Lao People’s Democratic Republic (Lao PDR.). A friendship bridge links the two countries and Nong Khai is a popular stop for travelers headed to Vientiane and greater Laos. Nong Khai has a charming capital city and the province features a number of beautiful natural attractions and a fascinating culture. Mud Mee, a special style of silk that is popular with the Thai royal family, is produced in Nong Khai and the naga fireballs, a mysterious annual event, takes place in the Mekong River not far from town.
(http://www.tourismthailand.org/where-to-go/cities-guide/destination/nong-khai/)