When the movie "The Bridge on the River Kwai" came out, tourists flocked to Thailand to see the bridge that the British POWs had built.
Problem was, there was no bridge. Or rather, there was, but in the wrong place. Pierre Boule, who wrote the book which the movie was based on, did not check his facts, assuming that if the Bangkok - Rangoon railroad, building which the Japanese killed off 12,000 POWs and around 90,000 local residents, had run along Kwai, the bridge must have crossed the same river. In reality the famous bridge was across Mae Klong.
In the end, Thailand renamed the river. Now a stretch of Mae Klong a few miles long, across which the bridge runs, is called Kwai Yai - Big Kwai. I expect the tourists are happy.
