We depart Bangkok at 06:30, arriving before the crowds. The morning belongs to history: the Kanchanaburi War Cemetery, where nearly 7,000 Allied POWs lie buried in immaculate rows; the JEATH War Museum, a replica POW hut filled with photographs, personal letters, and the brutal arithmetic of the Death Railway; and the Bridge over the River Kwai — the actual bridge, walkable, with the possibility of watching the historic train cross overhead.
The afternoon belongs to Erawan National Park. After a sit-down lunch at a riverside restaurant, you have three full hours at the seven-tiered Erawan Waterfalls — enough time to reach the upper tiers, swim in the emerald pools, and return at your own pace. No rushing. No group waiting for you at the gate.