Done Sao Island Overview
Don Sao Island is located within the Golden Triangle, on the Laos side of the Mekong River. Little more than a market, it is possible to visit from Thailand without a visa or any entry/exit formalities. The market itself is regularly rated as underwhelming, but you have the novelty of saying you have been to Laos, and the boat ride on the Mekong river is enjoyable.