This guided tour explores the four aqueducts of Baix Vallès and Dosrius, including the route of 700 steps between Ciutat Meridiana and Trinitat Nova. It is organized by Casa de l'Aigua de Trinitat Nova, Castell de Torre Baró, CC Vallvidrera - Vázquez Montalbán, CC l'Elèctric, and the Collserola Natural Park.
Official site
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