The rest of the Taj Mahal complex included a main gateway of red sandstone and a square garden divided into quarters by long pools of water, as well as a red sandstone mosque and an identical building called a jawab (or “mirror”) directly across from the mosque. Traditional Mughal building practice would allow no future alterations to be made to the complex. As the story goes, Shah Jahan intended to build a second grand mausoleum across the Yamuna River from the Taj Mahal, where his own remains would be buried when he died; the two structures were to have been connected by a bridge. In fact, Aurangzeb (Shah Jahan’s third son with Mumtaz Mahal) deposed his ailing father in 1658 and took power himself. Shah Jahan lived out the last years of his life under house arrest in a tower of the Red Fort at Agra, with a view of the majestic resting place he had constructed for his wife; when he died in 1666, he was buried next to her.