The Kwai River Bridge, located in Thailand, is a famous railway bridge that spans the Kwai River. It was constructed during World War II by Allied prisoners of war and Asian laborers under Japanese supervision. The bridge is part of the Burma Railway, also known as the "Death Railway," which was built to connect Thailand and Burma. The bridge gained international recognition through the 1957 film "The Bridge on the River Kwai," which dramatized its construction. Today, it serves as a historical site and tourist attraction, symbolizing the hardships faced by those who built it and the impact of war on human lives.