The Kalka–Shimla Railway opens

Built by the Delhi–Ambala–Kalka Railway Company and opened on 9 November 1903. It runs 96 km on 2 ft 6 in gauge with 103 tunnels (the longest, Barog tunnel no. 33) and more than 800 bridges. It was inscribed as part of the Mountain Railways of India UNESCO World Heritage Site in 2008.