Welcome to Central Thailand
Heading west, Kanchanaburi's museums chronicle the dark history of the Thailand–Burma Railway (aka the Death Railway) and WWII memorials pay tribute to thousands of lost lives. Scenery gets wetter and wilder following Mae Nam Khwae Yai northwest. The river's tributaries are hugged by sedate villages (and the occasional riverside resort) and skirt national parks such as the waterfall-kissed Erawan and Sai Yok.
Life dawdles at an even slower pace in Sangkhlaburi in the multi-ethnic northwest, where villages and national parks bordering Myanmar have a beguiling, frontier feel.