(2) Agra Fort: it was built in 1573 A.D during Akbar's reign, served as the main residence of the emperors of the Mughal Dynasty till 1638; Taj Mahal: was commissioned in 1632 by the Mughal emperor, Shah Jahan to house the tomb of his favourite wife, Mumtaz Mahal; Purana Qila: its current form was built by Sher Shah Suri, the founder of the Sur Empire.