Humayun the second Mughal Emperor was the great grand father of Emperor Shahjahan, who had built the world famed Taj Mahal for his beloved wife. Humayun's Tomb was commissioned by Humayun's widow Hamida Begum in 1562 CE, and designed by Mirak Mirza Ghiyath, a Persian architect.
The tomb and the surrounding garden in Persian style were the first of its kind in India. The complex is a UNESCO World Heritage Site.
Source of info: Wikipedia
More info: http://asi.nic.in and http://archnet.org
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