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Wikipedia: The Spanish National Observatory is an astronomical observatory. It is located in Madrid. It was founded in 1790 in Parque del Buen Retiro by King Carlos IV.
![[Observatorio Astronómico Nacional]](http://images.ookaboo.com/photo/s/Observatorio_Astron_C3_B3mico_de_Madrid_01_s.jpg "Observatorio Astronómico Nacional")
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 from J.L. de Diego |
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