The Kalka–Shimla Railway is a 2 linear unit half dozen in (762 mm) railroad railway in North Asian country travel on a principally mountainous route from Kalka to Shimla. It is known for dramatic views of the hills and encompassing villages. The Kalka–Shimla Railway was built in 1898. to connect Shimla, the summer capital of India throughout the British rule, with the rest of the Indian rail system. At the time of construction 107 tunnels and 864 bridges, were built throughout the course of the track. The Chief Engineer of the project was H.S. Herlington.The locomotives used during the earlier amount were factory-made by Sharp, Stewart and Company, and larger locomotives were introduced which were factory-made by Hunslet Engine Company.