A UNESCO World Heritage Site
Gateway to Himachal Pradesh, mainly established for transshipment & transit purposes. Derived its name from famous Kali Mata temple located at the Shimla end of the town. The NG toy train starts its uphill journey from the Kalka. A diesel shed as well as narrow gauge workshop located at Kalka is catering to the operation and maintenance needs of engines and coaches of Kalka-Shimla Rail section.