INDIA Rajasthan Jaipur, The Jantar Mantar, historical Observatory of Maharaja Jai Singh II, built between 1727 and 1734, UNESCO world heritage, Observation deck of the samrat yantra, Giant sundial / INDIEN Rajasthan Jaipur, Jantar Mantar, historische Sternwarte des Maharaja Jai Singh II, UNESCO Welterbe
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