The Taj Mahal is a white MARBLE mausoleum located in Agra, India. It was built by Mughal emperor Shah Jahan in memory of his third wife, Mumtaz Mahal. The material used to construct the Taj Mahal is MARBLE, which is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. MARBLE is known for its durability and beauty, making it an ideal material for the construction of the Taj Mahal.