May 10, 2016
The Jantar Mantar monument of Jaipur, Rajasthan is a compilation of nineteen architectural astronomical instruments, built by the Rajput king Sawai Jai Singh II. It was completed in 1738 CE. There are jantar-mantar in the whole India, namely Delhi, Jaipur, Ujjain, Varanasi, and Mathura. The main purpose of this observatory was to compile astronomical tables and predict the time and movements of the sun, earth and planets. Jantar-mantar of jaipur is world heritage site since 2010.