Jantar Mantar

Jantar Mantar is an astronomical observatory located in Jaipur, Rajasthan, India. It was built in the early 18th century by Maharaja Sawai Jai Singh II, who was a lover of astronomy and astrology.

The observatory features a collection of architectural astronomical instruments, including the world’s largest stone sundial, which can be used to measure time accurately to within two seconds. Other instruments include the Samrat Yantra, which is used to measure the declination of the sun, and the Jai Prakash Yantra, which is used to determine the position of the celestial bodies.

Jantar Mantar is a fascinating place to visit for anyone interested in astronomy or science. The instruments are incredibly accurate and were designed to be used without the aid of modern technology. Visitors can take a guided tour of the observatory and learn about the history and use of each instrument.