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
Taj Mahal the same architect, Ali Mardan. Early accounts of the garden describe its profusion of vegetation, including abundant roses, daffodils, and fruit trees. As the Mughal Empire declined, the Taj Mahal and its gardens also declined. By the end of the 19th century, the British Empire controlled more than three-fifths of India, and assumed management of the Taj Mahal. They changed the landscaping to their liking which more closely resembled the formal lawns of London. The Taj Mahal complex is bordered on three sides by crenellated red sandstone walls; the side facing the river is open. Outside the walls are several