Now it’s arguable whether this is an adventure sport or just a big drinking binge, but either way it deserves a place on this list. Tubing is unique to Laos. For a small fee, a tube can be hired out and you basically chuck yourself in the water and whizz down the Mekong. Some genius (or madman) thought to turn it into a bar crawl and now at the start of the tubing experience and all the way along, bars scatter and haul you in to partake in drinking of quite mad proportions.
Down the river you can fly off huge slides, bounce off giant inflatables and swings and generally get your heart racing. It’s often a recipe for disaster however, especially in the dry season when the river is low. Make sure you plan your trip in the wet season, when the water is high and you can drink (or not of course) and cruise down the Mekong safely in a tube. Completely random but utterly brilliant.
Another “What to do” in Laos: Watch Sunset on Phousi Hill