Isa Khan's tomb was built during his lifetime (ca 1547-48 AD). It is situated near the site of the Mughal Emperor Humayun's Tomb complex in Delhi which was built later (between 1562-1571 AD). This octagonal tomb has distinct ornamentation in the form of canopies, glazed tiles and lattice screens, and a deep veranda surrounding it, which is supported by pillars. It stands to the south of the Bu Halima garden at the entrance of the complex. An inscription on a red sandstone slab indicates that the tomb is that of Masnad Ali Isa Khan, son of Umar Khan, the Chief chamberlain, and was built during the reign of Islam Shah Suri, son of Sher Shah, in 1547-48 A.D. On 5 August 2011, restoration work on this tomb led to the discovery of India's oldest sunken garden. Isa Khan’s garden tomb is considered the earliest example of an Indian sunken garden attached to a tomb. This concept was later developed at Akbar’s Tomb and at the Taj Mahal.