The great mughal king Humayun died in 1556, and his widow Hamida Banu Begam, also known as Haji Begam, commenced the construction of his tomb in 1569, fourteen years after his death. It is the first distinct example of proper Mughal style, which was inspired by Persian architecture. It is well known that Humayun picked up the principles of Persian architecture during his exile, and he himself is likely to have planned the tomb.The square red sandstone double-storeyed structure of the mausoleum with chamfered corners rises from a 7-m. high square terrace, raised over a series of cells, which are accessible through, arches on each side. The grave proper in the centre of this cell-complex is reached by a passage on the south. The octagonal central chamber contains the cenotaph, and the diagonal sides lead to corner-chambers which house the graves of other members of the royal family. Externally each side of the tomb, its elevations decorated by marble borders and panels, is dominated by three arched alcoves, the central one being the highest. Over the roof pillared kiosks are disposed around the high emphatic double dome in the centre. The central octagonal chamber contains the cenotaph, encompassed by octagonal chambers at the diagonals and arched lobbies on the sides. Their openings are closed with perforated screens. Each side is dominated by three arches, the central one being the highest. This plan is repeated on the second storey too. The roof surmounted by a double dome of marble has pillared kiosks placed around it. It is a must see for all tourist visiting Delhi.