Jantar Mantar is an astronomical observatory that was built in 1724 by Maharaja Jai Singh 2 of Jaipur.
The main purpose of the observatory was to predict the times and movements of the sun, moon and planets, which is today classified as astronomy.
The observatory houses three distinct instruments – the Samrat Yantra, the Jayaprakash and the Mishra yantras.
There are five Jantar Mantars in India New Delhi, Ujjain, jaipur, Varanasi or Banaras and Mathura, of which the largest is in Jaipur which features many instruments along with the world’s largest stone sundial.
The Vrihat Samrat yantra is a sundial that can give the local time to an accuracy of 2 seconds.
It is a UNESCO World Heritage Site.
Near Metro station – Rajiv Chowk Metro Station.
Address-Sansad Marg, Connaught Place, New Delhi, Delhi 110001
Entry Fee – Chargeble.