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Following its recognition with the Polis Award, the comprehensive expansion and sustainable modernisation of a school complex in Davos Platz, Graubünden, has now been honoured with the 2025 Architizer Award. The project by CURA Architekten, which won the architectural competition in October 2022, sets new standards for sustainable construction in the educational sector.
The design by architects Otto Closs and Marc Ritz features an innovative blend of modernisation and expansion. By integrating the existing school structure into the project and reducing the new building volume by 40%, the architects rejected demolition in favour of a forward-thinking concept: a large wooden “U” was placed over the existing structure, preserving it while meeting new technical requirements and increased space needs. This sustainable approach combines old and new, significantly reducing the ecological footprint by conserving resources.
“With the renovation and expansion of this school facility, we’ve demonstrated that it’s possible to future-proof existing buildings without completely abandoning them.”
Marc Ritz
The integral “LowTech” concept allows cross-ventilation of all learning and working areas through the strategic opening of interior skylights, eliminating the need for mechanical ventilation during summer months. The open atrium functions as a natural chimney, enhancing passive climate control. The new building features advanced sustainable technologies, including a powerful photovoltaic system that generates the school’s electricity on-site. Additionally, a geothermal system provides energy-efficient heating for the entire complex, making a significant contribution to reducing CO₂ emissions.
“Our approach balances respect for the existing structure with the requirements of a modern, energy-efficient school. The project in Davos Platz exemplifies the harmonious integration of tradition and innovation in architecture.”
Otto Closs
