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Wikipedia: The Águas Livres Aqueduct ("Aqueduct of the Free Waters") is a historic aqueduct in the city of Lisbon, Portugal. It is one of the most remarkable examples of 18th-century Portuguese engineering. The main course of the aqueduct covers 18 km, but the whole network of canals extends through nearly 58 km.
![[Aqueduct arches over the Alcantara valley]](http://images.ookaboo.com/photo/s/Aqueduto_das_C3_81guas_Livres_281_29_s.jpg "Aqueduct arches over the Alcantara valley")
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 from user:Juntas |
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