Origins and architecture of the Taj Mahal leading classes of Indian social structure and thus defined themselves as rulers in Indian terms. Red sandstone also had significance in the Persian origins of the Mughal empire where red was the exclusive colour of imperial tents. In the Taj Mahal the relative importance of each building in the complex is denoted by the amount of white marble (or sometimes white polished plaster) that is used. The use of naturalist ornament demonstrates a similar hierarchy. Wholly absent from the more lowly jilaukhana and caravanserai areas, it can be found with increasing frequency as the processional route approaches the climactic Mausoleum.
Origins and architecture of the Taj Mahal complex of buildings and gardens that extends over and includes subsidiary tombs, waterworks infrastructure, the small town of 'Taj Ganji' to the south and a 'moonlight garden' to the north of the river. Construction of Taj Mahal began in 1632 AD, (1041 AH), on the south bank of the River Yamuna in Agra, and was substantially complete by 1648 AD (1058 AH). The design was conceived as an earthly replica of the house of Mumtaz Mahal in paradise. In 1607 (AH 1025) the Mughal Prince Khurrum (later to become Shah Jahan) was betrothed to Arjumand Banu Begum, the grand daughter