An adventure in itself for children adults alike. The Nilgiri Mountain Railway is 46 kilometers railway became operational in 1908 and has been carrying passengers since then, through 16 tunnels, 208 curves and 250 bridges.28.5. The railway is particularly picturesque because of the surrounding rocky terrain, ravines, tea plantations, and thickly forested hills. This exclusive train designated by UNESCO as World Heritage Site in July 2005