text: The Diwan-i-Khas ( the Private Audience Chamber ) , known as the Shish Mahal ( Palace of Mirrors ) , features the Rajputs ' flamboyant taste for covering walls with green , orange , and purple glass , and the vaulted ceilings with thousands of little convex mirrors .
  
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  The Shish Mahal was very costly to build , and many generations of royalty lived there .