Caption: The world's first green legislative building in the southern metropolis of Chennai, the capital of Tamil Nadu state.

Caption: Prime Minister Manmohan Singh inaugurates the new Tamil Nadu legislative building - secretariat complex in Chennai on March 13, 2010. It is the first assembly building to get the Gold rating by the Indian Green Building Council (IGBC) under the Leadership in Energy and Environmental Design (LEED) Green Building Rating System developed by the US Green Building Rating Council.

Caption: Prime Minister, Dr. Manmohan Singh at the inauguration of the Legislative Assembly - Secretariat Complex, in Chennai, Tamil Nadu on March 13, 2010 along with Sonia Gandhi and Chief minister of Tamil Nadu K.M. Karunanidhi