The Jantar Mantar monument in Jaipur, Rajasthan may be a assortment of 19 subject astronomical instruments, designed by the Rajpoot king Sawai Jai Singh II, and completed in 1734 century. It options the world's largest stone timekeeper, and may be a United Nations Educational Scientific and Cultural Organization World Heritage website. it's set close to town Palace and Hawa Mahal of Jaipur, the monument options masonry, stone and brass instruments that were designed mistreatment physical science and instrument style principles of ancient Hindu Indic texts. The instruments enable the observation of astronomical positions with the eye. The monument expresses subject innovations, also because the returning along of ideas from completely different spiritual and social beliefs in 18th-century Bharat. The observatory is associate degree example of the Ptolemaic point physical science that was shared by several civilizations.