Jantar Mantar

Timings : Sunrise to Sunset

Entry : entry fee is as follows : 
Indian : Rs. 5
Foreigners : Rs. 100

Place : Jantar Mantar, Sansad Marg, Connaught Place (CP), New Delhi

Landmark : Opposite 'The Park' Hotel

Venue Info : Map | Nearest Metro Stations - 'Patel Chowk(Yellow Line)Exit-Gate No.-2' & 'Shivaji Stadium(Orange Line)' & 'Rajiv Chowk (Blue Line)'

About Jantar Mantar : Jantar Mantar (Yantra - instruments, mantra - formulae) was built in 1724 by Maharaja Jai Singh of Jaipur.
He found existing astronomical instruments too small to take correct measurements and so he built these larger and more accurate instruments.