Which is the greatest example of stone craft of Uttar Pradesh?

The stone crafts of Uttar Pradesh have flourished to a great extent due to the fact that the Muslim rulers of India have patronised this craft to a great extent. The stone crafts in Uttar Pradesh reached the zenith of excellence during the Mughal period when the Taj Mahal was made. The famous among the stone crafts of Uttar Pradesh is the mosaic work of Taj Mahal and Fatehpur Sikri.