Vang Vieng River Festival in Vang Vieng
Vang Vieng's Nam Song River hosts candlelit boat releases and village longboat races each October at Boun Ok Phansa, the close of Buddhist Lent, set against the town's dramatic limestone karst backdrop. The same river increasingly doubles as a hub for adventure tourism and a December international music festival, layering older Buddhist river traditions with newer commercial river culture.
Vang Vieng's stretch of the Nam Song River, better known internationally for inner-tubing and kayaking, also plays host to a cluster of river-based traditions that together form what is loosely called the Vang Vieng River Festival, most visibly at Boun Ok Phansa, the end of Buddhist Lent, usually in October.