Built in the mid 16th century by Haji Begum, senior wife of Humayun, the second Mughal emperor, Humayun's Tomb is an early example of Mughal architecture built in Delhi. A rose petal sandstone mausoleum built in proper Mughal style is a beautiful memorial to the poet king. Octagonal in shape, raised on a plinth, with double domes, high arches, laid in the centre of a large walled enclosure, the monument is an imposing structure. A baradari (pavilion) occupies the centre of the eastern wall and a hamam (bath chamber) the centre of northern wall. Approached from four sides by paved stone paths which divide the garden into four squares, the mausoleum also has the distinction of having several of the Mughal rulers buried here.