Tomb of Isa Khan is considered to be one of the most pleasing creation of octagonal tomb style. The Tomb and Mosque are constructed mainly of local grey quartzite with ornamental use of red sandstone, within an octagonal enclosure wall. This monument is significant because along with the enclosure, the terrace, platform and the mausoleum itself were constructed on octagonal plan.
The Tomb and Mosque of Isa Khan is located immediately to the south of Bu Halima's Garden in Delhi. It is about 450m west of Humayun's Tomb. Isa Khan Niyazi was an influential noble during the period of Sher Shah Sur and Islam Shah. He is also known as the trusted advisor of Sher Shah. After the sudden death of Sher Shah , he played a decisive role in settling the fratricidal war among his sons. By his effort Salim Shah also known as Islam Shah became the emperor. His Tomb was constructed in 1547-48 after his death during the reign of Islam Shah Sur. According to an inscription over the western mihrab in the mortuary chamber, the tomb was built in 954 A.H. (1547-48 C.E.) by Masnad-i-Alj Isa khan, son of Niyaz Aghwan,the chief chamberlain.
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