Origins and architecture of the Taj Mahal complex in the riverfront terrace pattern seen elsewhere in Agra. Its width is identical to that of the rest of the Taj. The garden historian Elizabeth Moynihan suggests the large octagonal pool in the centre of the terrace would reflect the image of the Mausoleum and thus the garden would provide a setting to view the Taj Mahal. The garden has been beset by flooding from the river since Mughal times. As a result, the condition of the remaining structures is quite ruinous. Four sandstone towers marked the corners of the garden, only the south-eastward one remains. The foundations of
Taj Mahal mausoleum was essentially completed in 1643 but work continued on other phases of the project for another 10 years. The Taj Mahal complex is believed to have been completed in its entirety in 1653 at a cost estimated at the time to be around 32 million rupees, which in 2015 would be approximately 52.8 billion rupees (U.S. $827 million). The construction project employed some 20,000 artisans under the guidance of a board of architects led by the court architect to the emperor, Ustad Ahmad Lahauri. The Taj Mahal was designated as a UNESCO World Heritage Site in 1983 for being