Jantar Mantar- New Delhi
Sansad Marg, Connaught Place, Janpath, Connaught Place, New Delhi, Delhi 110001, India
The site is built by Maharaja Jai Singh II of Jaipur, from 1723 onwards, for revising the calendar and astronomical tables. The Ram Yantra, the Samrat Yantra, the Jaya Prakash Yantra, and the Misra Yantra are the distinct instruments of Jantar Mantar.
Location of Jantar Mantar- New Delhi