Taj Mahal earlier Mughal buildings were primarily constructed of red sandstone, Shah Jahan promoted the use of white marble inlaid with semi-precious stones. Buildings under his patronage reached new levels of refinement. The tomb is the central focus of the entire complex of the Taj Mahal. It is a large, white marble structure standing on a square plinth and consists of a symmetrical building with an "iwan" (an arch-shaped doorway) topped by a large dome and finial. Like most Mughal tombs, the basic elements are Persian in origin. The base structure is a large multi-chambered cube with chamfered corners forming an unequal
Origins and architecture of the Taj Mahal "The Baby Taj". Minarets did not become a common feature of Mughal architecture until the 17th century, particularly under the patronage of Shah Jahan. A few precedents exist in the 20 years before the construction of the Taj in the Tomb of Akbar and the Tomb of Jahangir. Their increasing use was influenced by developments elsewhere in the Islamic world, particularly in Ottoman and Timurid architecture and is seen as suggestive of an increasing religious orthodoxy of the Mughal dynasty. Under the reign of Shah Jahan, the symbolic content of Mughal architecture reached a peak. The Taj Mahal complex was