The Nilgiri Mountain Railway is a historic narrow-gauge railway in southern India, connecting the town of Mettupalayam to Ooty, a popular hill station. Opened in 1908, it spans approximately 46 kilometers and is renowned for its scenic views of the Nilgiri Hills. The railway is a UNESCO World Heritage Site, celebrated for its engineering and picturesque landscapes. The train operates on a unique rack and pinion system, allowing it to navigate steep gradients. Passengers can enjoy breathtaking vistas of tea plantations, forests, and valleys during the journey. The Nilgiri Mountain Railway is not only a mode of transport but also a popular tourist attraction.