Sheesh Mahal or Shish Mahal (Mirror Palace) is a royal dressing room located inside the Agra Fort featuring tiny mirror-like glass-mosaic decorations, and drums built into the walls. Located on the western side below the Diwan-I-Khas Hall, this structure was built by Shah Jehan during 1631-40 as a summer palace and was used for imperial bathing. Sheesh Mahal features two tanks with fountains interconnected by a canal and a waterfall. These water devices were provided to keep it cool and comfortable in the scorching heat of Agra.
The distinctive feature of Sheesh Mahal is the glass-mosaic work which has been done on a wide variety of stucco designs on all walls and ceilings. These glass pieces imported from Haleb (Aleppo in Syria) bear rich mirror quality. As the building is made up of thick walls with only a few openings, the semi-dark interior required artificial light, which glittered and twinkled in thousand ways through this glass work creating an ethereal atmosphere. However, the Sheesh Mahal was not a Hammam in any way.