Khas Mahal, built by Shah Jehan, is white marble palace inside the Agra fort in Uttar Pradesh state, India.  One of the finest examples of inlaid work on marble, Khas Mahal was built for the two daughters of Shah Jehan, Jahanara and Roshanara.  Agra fort, also described as the walled city, is a UNESCO World Heritage site built by the Mughal Emperor Akbar.