Jantar Mantar

Jantar Mantar

Constructed between 1728 and 1734 A.D, Jantar Mantar is located close to the City Palace. This beautiful observatory was built during the reign of Maharaja Jai Singh I and is the largest stone observatory in the world. This impressive stone observatory is equipped with 14 fixed geometrical instruments that were used for tracing the stars orbits. It was used for astronomy and at the time of eclipses, was used to find out the altitudes. In 1848, it was declared a National monument.