Built in the year 1570 the Humayun’s Tomb is of particular significance since it is the first garden tomb in the Indian subcontinent. It inspired several major architectural innovations, culminating in the construction of the Taj Mahal. Humayun died in 1556, and his widow Hamida Banu Begum, also known as Haji Begum, 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.

The tomb proper stands in the centre of a square garden, divided into four main parterres by causeways (charbagh), in the centre of which ran shallow water-channels. The high rubble built enclosure is entered through two lofty double-storeyed gateways on the west and south. A baradari (pavilion) occupies the centre of the eastern wall and a hammam (bath chamber) in the centre of northern wall.

The mausoleum is a synthesis of Persian architecture and Indian traditions; the former exemplified by the arched alcoves, corridors and the high double dome, and the latter by the kiosks, which give it a pyramidal outline from distance. Although Sikandar Lodi's tomb was the first garden-tomb to be built in India, it is Humayun's Tomb, which set up a new vogue, the crowning achievement of which is the Taj at Agra.