If you can only visit one wat in Ubon and you don’t feel like going too far out of the way, this is probably the best choice.
Wat Thung Si Muang’s best-known feature is the ho trai, a small hall used to preserve Buddhist scriptures. The exceptionally elegant wooden structure rises from the middle of a lotus pond, which is beautiful but also serves the purpose of keeping termites and other insects at bay. A Burmese-style six-tiered gabled roof draws gradually upwards to Thai-style chofa finials. Floral woodcarvings adorn outer walls, with detailed lacquer work decorating interior cabinets.