The Casa de l’Aigua (Museu d’Història de Barcelona) is a former water facility that tells the story of how the city was supplied. Built between 1915 and 1919, it formed part of Barcelona’s water system. A visit takes you through the old pumping station and reservoir, where original spaces and displays show how it all worked. It’s a place where engineering, city history and everyday life meet underground.
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The Casa de l’Aigua preserves an original stretch of the water pipeline that once supplied Barcelona. Its three brick arches are a reminder that the system once extended for nearly 20 kilometres.
The complex has two sites linked by an underground tunnel: Trinitat Vella, home to the former pumping station, and Trinitat Nova, which contains the storage reservoir and chlorination plant.
