The Kalka-Shimla Railway is a narrow-gauge railway in India, connecting the towns of Kalka and Shimla. It was inaugurated in 1903 and spans approximately 96 kilometers through the picturesque Himalayan mountains. The railway is renowned for its scenic views, featuring 102 tunnels and over 800 bridges. This railway is a UNESCO World Heritage Site, recognized for its historical significance and engineering marvels. It serves as a vital transportation link for tourists and locals alike, offering a unique travel experience through lush forests and charming villages along the route.