Jantar Mantar
The Stone Instruments That Still Tell Time
Overview
The Jantar Mantar in Jaipur, India, is an astronomical observatory completed in 1734 by Maharaja Sawai Jai Singh II, comprising 19 large masonry instruments for measuring time, predicting eclipses, and tracking celestial positions. A UNESCO World Heritage Site, it includes the Samrat Yantra, the world's largest stone sundial, accurate to about two seconds. It is best experienced with a guide who demonstrates the instruments in use. MyTripMyTravel pairs it with the adjacent City Palace.
The Jantar Mantar looks like abstract sculpture and is in fact a working scientific instrument park, 19 monumental masonry devices that still measure time and track the heavens nearly three centuries on.
Without explanation it is a curiosity; with a guide demonstrating the Samrat Yantra's two-second-accurate shadow or the zodiac instruments, it becomes one of the most intellectually rewarding stops in Jaipur.
MyTripMyTravel always pairs it with an expert guide and the adjacent City Palace, since the two share a wall and a single ticketed circuit.
At a glance
Jantar Mantar in brief
What to see
Highlights
Samrat Yantra
The 27 m sundial accurate to about two seconds, the centrepiece.
Jai Prakash Yantra
The hemispherical bowls mapping the sky in mirror image.
Rashivalaya
Twelve instruments, one per zodiac sign, for ecliptic measurement.
Ram Yantra
The paired cylindrical structures for altitude and azimuth.
Visitor information
Our tips
Never visit without a guide, the instruments are inert otherwise.
Mid-morning sun gives the clearest sundial demonstration.
Combine with the City Palace next door on one circuit.
Good to know
Jantar Mantar, your questions
Do I need a guide for the Jantar Mantar?
Effectively yes, the instruments are abstract without one. We provide an expert who demonstrates them in use.
Does the sundial actually work?
Yes, the Samrat Yantra is accurate to roughly two seconds and is demonstrated live.
How long does it take?
45 to 60 minutes with a guide for the principal instruments.
Is it near the City Palace?
Adjacent, they share a circuit, and we sequence them together.
More in Jaipur
Visit with us
See Jantar Mantar, properly.
A private, chauffeured visit with a licensed expert guide, timed for the best light and the smallest crowds. We fold Jantar Mantar into a wider Jaipur and Golden Triangle itinerary, built entirely around you.
- Skip the queue where possible, at the right hour
- Licensed local guide who brings the story to life
- Private car and chauffeur, door to door
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