Kanchanaburi (River Kwai) ★ 4.2
Kanchanaburi in west Thailand is the River Kwai day trip, with riverside seafood, Karen and Mon ethnic Thai cuisine, and the Death Railway WWII history laid.
Tip: Two-day trip is better than one. The Death Railway train ride from Kanchanaburi to Nam Tok is the canonical scenic stretch over the Tham Krasae trestle bridge.