Hawa Mahal, literally the Palace of Winds, was built in 1799 by the poet king Sawai Pratap Singh as a summer retreat for him and his family. It also served as a place where the ladies of the royal household could observe everyday life without being seen themselves. This unique five-storey structure is a blend of Hindu and Islamic architecture, and the exterior, with its small latticed windows (called jharokhas), resembles the crown of Lord Krishna.
http://tourism.rajasthan.gov.in/jaipur/19/hawa-mahal