Mies van der Rohe Pavilion 2026: Water Loss Art
Cierto Estudio, h3o architects, and Metrònom present the Plou prou? installation at the Mies van der Rohe Pavilion in Barcelona from July 17 to 30, 2026.

Stock photo for illustration only, not from the actual event
- Plou prou? is an ephemeral installation at the Mies van der Rohe Pavilion in Barcelona.
- The project was selected through the Open Call for Barcelona 2026 World Capital of Architecture.
- Twelve industrial tanks collect over 12,000 liters of groundwater to highlight water evaporation.
- The exhibition runs from July 17 to 30, 2026, designed by Cierto Estudio, h3o architects, and Metrònom.
Cierto Estudio, alongside h3o architects and Metrònom, has unveiled an ephemeral intervention titled Plou prou? at the iconic Mies van der Rohe Pavilion in Barcelona, Spain. Selected through the Open Call for Barcelona 2026 World Capital of Architecture, the project invites visitors to reconsider the intricate relationship between architecture, water usage, and the ongoing climate crisis.
The installation focuses heavily on the pavilion's reflective pools, which serve as one of its defining architectural elements. Rather than remaining static surfaces, these pools represent fragile systems heavily impacted by ambient heat and evaporation, requiring continuous water replenishment to maintain their familiar aesthetic.
To make this invisible process visible, twelve elevated industrial tanks have been installed to accumulate more than 12,000 liters of groundwater. This exact volume matches the estimated amount that will evaporate from the main pool throughout the fourteen days of the exhibition.

Stock photo for illustration only, not from the actual event
An elevated channel crosses the pavilion to act as a temporary aqueduct, feeding the water back into the pool via a steady drip. This continuous thread of dripping water physically exposes both the evaporation rate and the relentless passing of time.
Integrating a conceptual art installation into a masterpiece of modern architecture like the Mies van der Rohe Pavilion brilliantly highlights the hidden environmental costs of design. While reflective pools provide timeless aesthetic value, they also demand significant resource management. By visualizing water loss through a closed-loop system of groundwater and steady dripping, the architects turn a maintenance challenge into a poignant commentary on climate change and resource scarcity.
The project is a collaboration by Cierto Estudio, h3o architects, and Metrònom, on view from July 17 to 30, 2026, with all photography captured by Simone Marcolin and Cecília Coca.
Source: designboom
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