( 22 Sep, 2015) ECONOMY (OPTIONAL): Published By : upscgk.com TRANSPORTATION: Airports: International Indira Gandhi International Airport Domestic Palam Airport Safdarjung Airport Railway Stations: Five Main Railway Stations are: New Delhi railway station, Old Delhi, Nizamuddin Railway Station, Anand Vihar Railway Terminal Sarai Rohilla.[120] The Delhi Metro BUS STATIONS: Some of the popularly known ISBT’s are: Kashmere Gate Inter State Bus Terminal Sarai Kale Khan Inter State Bus Terminal Anand Vihar Interstate Bus Terminal Less Known Bus Station Terminal Shadipur Bus Depot Shivaji Bus Depot AGRICULTURE: The principal food crops are wheat, bajra, jowar, gram and maize. However, emphasis has now shifted from food crops to vegetables and fruit crops, dairy, poultry-farming, floriculture, etc., as these are more remunerative than food crops in the territory. INDUSTRY: Delhi is not only the largest commercial centre in northern India, but also the largest centre of small industries. These are manufacturing a wide variety of items like television, tape recorders, light engineering machines and automobile parts, sports goods, bicycles and PVC goods including footwear textiles, fertilizers, medicines, hosiery, leather goods, software, etc. TOURISM: Great Historical Monuments: Tourists Attraction Qutub Minar Humayun Tomb Red Fort (Lal Qila) India Gate Jama Masjid Jantar Mantar Lotus Temple Parliament House Purana Qila Rashtrapati Bhawan Safdarjung Tomb Lodi Tomb