Jantar Mantar, Delhi

Jantar Mantar was built in 1724 AD by Raja Jai Singh who founded the city Jaipur. It is among five observatories built by Singh across North India. 

Where the Jantar Mantar is located? 

Jantar Mantar is located on old parliament street near Connaught place, New Delhi. 

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Confused about what these observatories are ?

Observatories are the places where some monuments are built to observe natural phenomena especially astronomical observations. 

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This observatory have four different astronomical instruments. It has extensive grassy lawns around it. This spot is very popular for picnic. 

The observatory consists of a group of six curiously shaped huge stonework structure which were invented to study and observe celestial phenomena, the location and the movements of the Sun, the Moon and the other celestial bodies. 

The instruments in Jantar Mantar are 

Name of the instrument	Number of structures
Samrat Yantra	1
Ram Yantra	2
Jaya Prakash Yantra	2
Mistra Yantra	1