The Khwae Yai River, widely known as the River Kwai, flows through the forested landscapes of Kanchanaburi Province and holds a profound place in both Thai history and global memory. Its name became internationally recognised after the 1957 film The Bridge on the River Kwai, which brought attention to the wartime construction of the Burma Railway during World War II. Today, travellers can visit the iconic Bridge over the River Kwai—a powerful historic landmark—and explore the area’s thoughtfully curated memorial sites, including the JEATH War Museum and the Kanchanaburi War Cemetery. Beyond its historical significance, the river valley is blessed with natural beauty: Erawan National Park’s emerald-tiered waterfalls and scenic hiking trails are within easy reach, while a gentle boat trip along the river reveals misty mountains, traditional riverside life, and a tranquil side of Kanchanaburi that balances remembrance with serene nature.