Jantar Mantar
Historical SiteWorld Heritage SiteBeen to Jantar Mantar, or dreaming of it?
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Been to Jantar Mantar, or dreaming of it?
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22,000+ places in 198 countries to rate and rank

Photo: Knowledge Seeker · Public domain · Wikimedia Commons
Monument site, collection of astronomical instruments in Jaipur, Rajasthan, India
The Jantar Mantar is a collection of 19 astronomical instruments built by the Rajput king Sawai Jai Singh, the founder of Jaipur, Rajasthan, India. The monument was completed in 1734. It features the world's largest stone sundial, and is a UNESCO World Heritage Site. It is near City Palace and Hawa Mahal. The instruments allow the observation of astronomical positions with the naked eye. The observatory is an example of the Ptolemaic positional astronomy which was shared by many civilizations.