The correct answer is South. In the 'river-front gardens' designed during the Mughal regime, the mausoleum was placed on a terrace and the garden to itsArchitecture became more complex during the Mughal period. Many Mughal rulers like, Babur, Humayun, Jahangir, Akbar, and especially Shah Jahan. Shah Jahan took a keen interest in literature, art, and architecture. He adapted the river-front garden for the layout of the Taj Mahal. It was the grandest architectural accomplishment during his reign. In this, the white marble mausoleum was placed on a terrace by the edge of the river. The garden was to its south.