The Kalka–Shimla Railway is a very prominent railway route enroute from Kalka to Shimla, the queen of hills. The entire route is well known for the scenic beauty and the beautiful view of the hills and the neighboring villages. This track is 2 ft 6 in (762 mm) narrow gauge railway which runs in North-West India and travels on the mostly mountainous route from Kalka to Shimla. The railways track from Kalka–Shimla Railway was originally built to connect Shimla, which was the summer capital of India during the rule of the Britishers and is now being managed by the Indian railways.
In the modern times Shimla is the capital of the Indian state of Himachal Pradesh and Kalka is well known town located in the Panchkula district of Haryana. In the year 2008, the site has also been included in the World Heritage site mountain railways of India.