Central Railway (abbreviated CR) is one of the 19 zones of Indian Railways. Its headquarters is in Mumbai at Chhatrapati Shivaji Maharaj Terminus. It has the distinction of operating the first passenger railway line in India, which opened from Mumbai to Thane on 16 April 1853 (170 years ago). The railway zone was formed on 5 November 1951 by grouping several government-owned railways, including the Great Indian Peninsula Railway, the Scindia State Railway of the former princely state of Gwalior, Nizam State Railway, Wardha Coal State Railway and the Dholpur State Railway. The Central Railway zone formerly included large parts of Madhya Pradesh and part of southern Uttar Pradesh, which made it the largest railway zone in India in terms of area, track mileage and staff. These areas became the new West Central Railway zone in April 2003.The Central Railway General Manager's official residence (erstwhile GIPR agent's residence), 'Glenogle'-a Grade II-B heritage bungalow, is located on Bhausaheb Hire Marg (Mount Pleasant Road), adjacent to the Maharashtra Chief minister's official residence 'Varsha' in Malabar Hill, Mumbai.