Introduction

The Jantar Mantar is an observatory. Located on the roof of Man Mahal near Man Mandir Ghat, it can be accessed from the river bank as well as a street close to Kashi Vishwanath Temple. It was built on the lines of the observatories in Delhi, Jaipur, Ujjain and Mathura, and covers an irregular rooftop area that is 31 meters long (103 feet), 9 meters wide (30 feet). It can be approached from a staircase to the northeast.

The observatory was added to Man Mahal sometime between 1724 and 1730 by Sawai Jai Singh II. The instruments are meant for calculating time, preparing lunar and solar calendars and studying the movements, distances, angles of inclination of the stars, planets and other heavenly bodies.

Jai Singh championed the cause of science and technology in a big way in his day. He sent scholars abroad to study foreign observatories before embarking on his projects. And astronomy held a special fascination for him.

Special Attributes

Observatory with a difference!

Nuisance

The site is very peaceful and free of irritants.

Dressing restrictions

Dress is whatever you find comfortable

Connectivity

Well connected by boats and rickshaws

Enjoyed by

Lovers of science and culture

Exposure

Margin for some degree of exposure should be kept

Avoidable Season

July, August

Facilities

Basic, plan accordingly

Things Not Allowed

No such restriction.

Tip

If you happen to be there on a sunny day, try reading the time using the observatory's technique.

Type of site

Astronomical observatory