The most well known attraction in Kanchanaburi is the so-called Bridge on the River Kwai. This became world famous due to the book and movie of the same name. Though, strictly speaking, it should be the Bridge over the River Kwae Yai. The bridge and tracks are part of the infamous Death Railway built by Allied prisoners and Asian labourers during the Second World War. An estimated 100,000 of them died during construction. The 415 kilometer long railway line was built to connect Thailand with Burma. The bridge was bombed by the Allied Forces towards the end of the war. The only original part of the bridge are the arched sections. The River Kwai Bridge Festival takes place every year at the end of November and early December.