Humayun's tomb : Built in the 16 th century by Haji Begum, Persian born senior wife of the second Mughal emperor, Humayun, this tomb is a superb example of early Mughal architecture (Rs 10, near Nizamuddin station). Elements in its design - a squat building with high arched entrances that let in light, topped by bulbous dome and surrounded by formal gardens - were to be refined over the years to eventually create the magnificence of Agra's Taj Mahal. Haji Begum is buried in the red and white sandstone and black and yellow marble tomb.

The octagonal tomb of Isa Khan (chief architect of Taj Mahal) is through a gate to the left of the entrance and is a fine example of Lodhi architecture.