The Rashtrapati Bhavan or The Official Residence of the Head of the State is the official residence of the President of India, located at Raisina hill in New Delhi. Until 1950 it was known as "Viceroy's House" and served as the residence of the Viceroy and Governor-General of India. It is amidst an area known as Lutyens' Delhi.   

At present, it is the largest residence of any Chief of the State in the world.   The construction of the building was planned for 4 years, but World War I intervened and construction required 19 years to complete. Its first occupant, Lord Irwin, began occupation on Jan. 23, 1931.

The Rashtrapati Bhavan is a large and vast mansion with four floors and has 360 rooms. It is built on a floor area of 200,000 square feet (19,000 m2).