La Sal Pavilion: A Masterpiece of Sustainable Pavilion Architecture in Cádiz

A Pavilion Rooted in Tradition and Sustainability

La Sal Pavilion, designed by CHS+R arquitectos and Carlos Montes, is an architectural intervention that redefines sustainable pavilion architecture. Located within the Bahía de Cádiz Natural Park, this project embraces the region’s rich history, ecological significance, and the ancient practice of salt harvesting. The pavilion is not merely an installation; it is a social and environmental catalyst that connects the urban center of San Fernando with its natural surroundings.

Harnessing Salt as a Structural and Symbolic Element

The pavilion is conceived as an exploration of one of the most abundant and renewable resources in the region—salt. By integrating ancestral techniques with modern digital fabrication, the design pays homage to traditional salt crystallization methods while utilizing contemporary processes to enhance durability and aesthetic appeal. The structure consists of three primary materials: salt, wood, and steel. The accumulated salt forms a solid base, wood defines the pavilion’s interior and exterior continuity, and steel references historic metal frameworks used in the salt trade.

A Tower that Engages with the Landscape

At the heart of the design stands an upright element—a tower that serves as both a landmark and a viewing platform. Inspired by the typology of the Tower of Hercules, this structure allows visitors to observe the surrounding salt marshes, estuaries, and the wider landscape. It is an architectural device that fosters understanding and engagement with the environment, visually connecting historical salt production sites with contemporary urban life.

A Pavilion as a Social and Educational Space

Beyond its architectural significance, La Sal Pavilion serves as a dynamic space for knowledge exchange. The interior functions as a place for discussion, research, and cultural gatherings, reinforcing the relationship between local communities and the environment. Through workshops, exhibitions, and public events, the pavilion raises awareness of sustainable development and traditional practices that have shaped the region’s economy and heritage.

Innovative Salt Panel Technology

A defining feature of the pavilion is its use of translucent salt panels, created through a meticulous crystallization process. These panels are developed using 100% recycled cast acrylic coated with a layer of bio-resin, onto which salt crystals naturally form. The result is a striking material that captures light and texture, enhancing the visual identity of the pavilion while remaining true to its ecological principles.

A Model for Future Sustainable Architecture

La Sal Pavilion exemplifies the potential of sustainable pavilion architecture by seamlessly integrating traditional knowledge with innovative techniques. It demonstrates how vernacular materials and processes can inform contemporary design solutions that are both environmentally responsible and socially enriching. By leveraging natural elements—salt, sun, wind, and water—the project establishes a dialogue between past and future, offering a model for ecological architecture in coastal landscapes.

All photographs are works of Javier Orive, Fernando Alda, DEL RIO BANI, José Rodríguez + Carlos Montes, José Guilherme Marques