Shimla, Mar 13 (ANI): The heritage steam engine, about 112-year old, is becoming the preference of foreign tourists in Himachal Pradesh's Shimla. A group of nearly 30 tourists from United Kingdom travelled through this steam engine today. The northern railway is offering the steam engine travel on booking by the tourists. Travelling on this heritage track gives a panoramic view of heritage narrow gauze line of two feet and six inches. The foreigners coming to India for the first time are happy to experience the steam engine and also to see the people with colours on the Hindu festival of 'Holi'.