The Science City of Kolkata is the largest science centre in the Indian subcontinent. Managed by National Council of Science Museums (NCSM), Ministry of Culture, Government of India, it is located at the crossing of Eastern Metropolitan Bypass and J. B. S. Haldane Avenue. Saroj Ghose, the first director general of NCSM, who is credited with having conceptualised this centre in 1997. This centre was inaugurated by two parts: the ‘Convention Centre Complex’ was unveiled on 21 December 1996 by Paul Jozef Crutzen in presence of the then chief minister Jyoti Basu and the whole centre was opened by the then prime minister Inder Kumar Gujral on 1 July 1997. On 10 January 2010, prime minister of India, Manmohan Singh laid the foundation stone for the second phase of Science City in presence of the then chief minister of West Bengal, Buddhadeb Bhattacharjee.