Kalka Shimla Toy train ride is one of India's most incredible feats of engineering covering a staggering 102 tunnels, 864 bridges, and 919 stunning curves.Train is said to be one of the most scenic railway journeys in India.The Shimla toy train was declared as a heritage site in 2007 by the Himachal Pradesh State Government and in 2008 it was declared as a UNESCO World Heritage Site.This train ranks at fourth position in the world heritage list of UNESCO. The Kalka–Shimla railway is a 2 ft 6 in (762 mm) narrow-gauge railway in North India which traverses a mostly-mountainous route from Kalka to Shimla. It is known for dramatic views of the hills and surrounding villages.Construction of the Kalka–Shimla railway on 2 ft (610 mm) narrow-gauge tracks was begun by the privately funded Delhi-Ambala-Kalka Railway Company following the signing of a contract between the secretary of state and the company on 29 June 1898.The government however provided the land free of charge to the co...