Reviving a medieval fortress Reuse the fortress

Is it possible to revive an ancient medieval fortress? With this question in mind, Orbyta Engineering participated in the international Reuse the Fortress competition, proposing a project that reinvents the Châtel-Argent fortress in the Aosta Valley as a mountain refuge for hikers.

This historic site, featuring imposing walls, a cylindrical tower, and a chapel, stands on a rocky terrace overlooking the valley. The project aims to preserve the charm and heritage of the fortress by combining innovative design, modern functionality, and a deep respect for the historic and natural context.

The Helix project draws inspiration from the original fortress construction techniques, particularly the use of helical scaffolding. This concept is reflected in the hexagonal shape of the housing modules, which combines structural stability and adaptability to the terrain.

• Modular design: the hexagonal structure of the modules requires minimal intervention on the ground, preserving the natural landscape. Standardized dimensions of walls, roofs and platforms simplify construction, reducing costs and optimizing assembly time.
• Historic Integration: the central tower has been restored with an interior helical staircase connecting three levels, culminating in a panoramic terrace with breathtaking views of the valley.

The Helix project combines private areas and public spaces to provide an immersive and cohesive experience:

• Outdoor cinema: located on the south side of the tower, it takes advantage of the natural slope of the land. Integrated modular seating provides comfortable viewing that respects the natural surroundings.
• Dining hall in the existing church: an elegant reuse of the historic structure, connected to the rest of the site by a pedestrian path through the complex.
• Housing modules: the rooms maintain perfect horizontality, with adjustable flooring to match the slope of the land. Each module is connected by pedestrian paths that integrate the site into a single system.

The project not only celebrates the legacy of the medieval fortress, but introduces sustainable and practical solutions to ensure visitor comfort:

• Adaptation to the terrain: housing modules require minimal excavation, respecting the natural landscape.
• Modular materials: the use of standardized components reduces waste and cost, facilitating long-term maintenance.
• Social integration: community spaces foster interaction among residents, creating a convivial and cohesive environment.

By transforming Châtel-Argent into a mountain retreat, the project promotes land appreciation, sustainability and the creation of unique cultural experiences.