History
Jantar Mantar was constructed by Maharaja Sawai Jai Singh II between 1727 and 1734. It is one of five astronomical observatories he commissioned across India, designed to compile astronomical data and predict celestial events.

A shot of the observation deck of the vrihat samrat yantra (the world's largest sundial)
Photo: Shutterstock
A shot of the observation deck of the vrihat samrat yantra (the world's largest sundial)
Photo: Shutterstock
