Rajasthan’s historical forts, palaces, art and culture attract millions of national and international tourists every year. Endowed with natural beauty and a great history, Rajasthan has a flourishing tourism industry. The palaces of Jaipur, lakes of Udaipur, and desert forts of Jodhpur, Bikaner and Jaisalmer are among the most preferred destinations of many tourists, Indian and foreign. As a matter of fact, Jantar Mantar in Jaipur and the hill forts of Rajasthan which include Chittorgarh Fort, Kumbhalgarh Fort, Ranthambore Fort, Gagron Fort, Amber Fort, Jaisalmer Fort and Amber Fort have recently been declared world heritage sites by UNESCO (United Nations Educational Scientific Cultural Organisation. Tourism accounts for eight percent of the state's domestic product. Many old and neglected palaces and forts have been converted into heritage hotels. Tourism has increased employment in the hospitality sector.