Mausoleum complex in Agra, western Uttar Pradesh state, northern India. It was built by the Mughal emperor Shah Jahan(reigned1628-58) to immortalize his wife Mumtaz Mahal ("Chosen One of the Palace"), who died in childbirthin1631, having been the emperor's inseparable companion since their marriagein1612. In its harmonious proportions and its fluid incorporation of decorative elements, it is distinguished as the finest example of Mughal architecture, a blend of Indian, Persian, and Islamic styles. Other attractions include twin mosque buildings (placed symmetrically on either side of the mausoleum), lovely gardens, and a museum