The tomb of Itimad-ud-daula, father of Nurjahan, built by Jahangir was the first Mughal building built completely with white marble.  

• Mughal architecture reached its apex during the reign of Shah Jahan.  
• The Taj Mahal is a marble structure on an elevated platform, the bulbous dome in the centre rising on a recessed gateway with four cupolas around the dome and with four free-standing minarets at each of its corners is a monument of universal fame. 

Source: Tamil Nadu state board.