Jantar Mantar in Jaipur is the biggest of five cosmic observatories worked by Maharaja Jai Singh amid the period 1727-1734. Comprising of 14 noteworthy geometric gadgets for measuring time, anticipating shrouds, following stars in their circles, discovering the declination of planets and deciding the divine elevations, the observatory is a noteworthy fascination for children and grown-ups alike. There is not a solitary exhausting minute as you wonder about the operations of these gadgets. The name Jantar Mantar actually converts into instrument of figuring.