The little town of Sangkhom (officially named Ban Chueang), facing the Lao island of Don Klang Khong, makes a great rest stop for those following the Mekong between Nong Khai and Loei. Staring at the lovely scenery tends to dominate visitors' time here, but there are also some wonderful attractions around town.
Prosperous Tha Bo is the most important commercial centre between Nong Khai and Loei, and the covered market, which spills out to the surrounding streets, is full of local products. A large Vietnamese population lives here, and they've cornered the market on noodle production. You'll see masses of sên lék (small rice noodles) drying in the sun on the west side of town.