Definition: **
Jantar Mantar is a collection of architectural astronomical instruments built in India during the 18th century to observe celestial phenomena and measure time accurately.
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**Jantar Mantar**
**Definition:**
Jantar Mantar is a collection of architectural astronomical instruments built in India during the 18th century to observe celestial phenomena and measure time accurately.
**Article:**
## Overview
Jantar Mantar refers to several observatories constructed by Maharaja Sawai Jai Singh II, primarily in Jaipur, Delhi, Ujjain, Varanasi, and Mathura. These structures consist of large-scale instruments made of stone and metal designed for tracking the positions of stars, predicting eclipses, and determining local time.
## Historical Significance
Built between 1724 and 1735, the Jantar Mantar observatories represent a blend of Indian and Islamic astronomical traditions. They were instrumental in advancing the study of astronomy in India and remain important cultural and scientific landmarks.
## Architectural Features
The instruments include sundials, astrolabes, and other devices such as the Samrat Yantra, which is one of the world’s largest sundials. Their precise geometric forms enable accurate astronomical measurements without the use of modern technology.
## Modern Relevance
Today, Jantar Mantar sites are protected monuments and popular tourist attractions, reflecting India’s rich heritage in science and architecture.
**Meta Description:**
Jantar Mantar is a series of 18th-century astronomical observatories in India, featuring large stone instruments for celestial observations and time measurement. These historic sites highlight India’s contributions to astronomy.