Jantar Mantar is a historic astronomical observatory located in the city of Jaipur, Rajasthan. It was built in the early 18th century by Maharaja Jai Singh II, a renowned astronomer and mathematician. The observatory is one of the five Jantar Mantars built by Jai Singh II in different parts of India.
The Jantar Mantar in Jaipur is a collection of 19 architectural astronomical instruments, which were used to measure time, predict eclipses, and track the movements of celestial bodies. The instruments are made of stone, marble, and brass, and are arranged in a large open space. The largest instrument in the observatory is the Samrat Yantra, a sundial that stands 27 meters tall and can measure time with an accuracy of two seconds.
Other notable instruments in the Jantar Mantar include the Jai Prakash Yantra, a pair of hemispherical structures used to measure the altitude and azimuth of celestial bodies, and the Ram Yantra, a set of two large cylindrical structures used to measure the altitude and azimuth of stars.
The Jantar Mantar is a UNESCO World Heritage Site and is considered one of the most important astronomical observatories in the world. It is a popular tourist attraction in Jaipur and attracts visitors from all over the world who are interested in astronomy and history. The observatory is open to the public every day and guided tours are available for visitors who want to learn more about the instruments and their history.
