Cross River Kwai is on the banks of Kanchanaburi's River Kwai Noi. Take a leisurely train journey from Bangkok on the historic railway, made famous by the movie 'The Bridge Over the River Kwai'. Kanchanaburi has a storied history with sites like the Death Railway, Hellfire Pass, and Prasat Muang Singh National Park with ancient ruins. Natural attractions include forests, mountains, waterfalls, caves, and the renowned Erawan National Park.