The northern railway line passing through Lopburi is unique because it runs directly through the heart of major historical sites. The tracks are located right next to Wat Nakhon Kosa and San Phra Kan, allowing passengers to see the ancient prangs from the train. This railway line was commissioned during the reign of King Rama V to connect Bangkok with the northern provinces. The alignment of the tracks alongside these ancient monuments reflects the transition from antiquity to the modern era of telecommunications. The experience of traveling by train past troops of monkeys and ancient temple ruins is a charm that attracts tourists from all over the world.