Udon’s geographical location 17°25′N 102°45′E is approximately 560 km from Bangkok. Udon is a major official and commercial center in northern Isan, Thailand, and the gateway to Laos, northern Vietnam, and southern China.
The city’s economy was boosted by the proximity to Udorn Royal Thai Air Force Base during the Vietnam War and retains reminders of that time in the form of bars, coffee shops, and hotels. “Udon sort of became like Pattaya when the GIs arrived,” said a local architect…Restaurants serving Western cuisine, hotels and nightclubs sprouted up everywhere to meet their needs. It was an extremely busy city back then.”