This was formerly the Viceroy's House designed by Edwin Lutyens. It is the most extensive and most significant twentieth century interpretation of a traditional Mughal garden (see chart of Asian garden design styles). The ornament was inspired by India but the design also has an echo of an English Arts and Crafts garden.The author of the first book on Indian gardens, C Villiers-Stuart, urged the planners of New Delhi to use Indian styles instead of European design styles. Lutyens read her book on his voyage to India. Villiers-Stuart was well aware of the heritage of Hindu gardens and also of the lack of visual evidence concerning their form. The gardens Lutyens saw in India were Mughal rather than Hindu so this is the style he used for the garden of the Rashtrapati Bhawan. He drew on European precedents (Paris and London) when planning the ceremonial avenue which leads from the India Gate to the eastern front of the President's Palace. See Gardenvisit page on Mughal Gardens.
There are some very good aerial images of the private garden and the public front of the palace in the first of these two videos:
New Delhi, India
February and March. Exact dates change year to year. Closed Mondays. Open 9:30 to 2:30pm.