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Jantar Mantar

The Jantar Mantar observatory, constructed in 1737, is located above the ghats along the Ganges, and is adjacent to the Manmandir and Dasaswamedh Ghats and near the palace of Jai Singh II of Jaipur. While less equipped than the observatories at Jaipur and Delhi, the Jantar Mantar has a unique equatorial sundial which is functional and allows measurements to be monitored and recorded by one person.